K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania
Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Clauer, N. [verfasserIn] |
|---|
| Format: |
Artikel |
|---|
| Erschienen: |
2010 |
|---|
| Anmerkung: |
© 2016 by Walter de Gruyter Berlin/Boston |
|---|
| Übergeordnetes Werk: |
Enthalten in: Clay minerals - De Gruyter, 1965, 45(2010), 3 vom: 01. Sept., Seite 393-411 |
|---|---|
| Übergeordnetes Werk: |
volume:45 ; year:2010 ; number:3 ; day:01 ; month:09 ; pages:393-411 |
| Links: |
|---|
| DOI / URN: |
10.1180/claymin.2010.045.3.393 |
|---|
| Katalog-ID: |
OLC2137029235 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | OLC2137029235 | ||
| 003 | DE-627 | ||
| 005 | 20230810075842.0 | ||
| 007 | tu | ||
| 008 | 230810s2010 xx ||||| 00| ||und c | ||
| 024 | 7 | |a 10.1180/claymin.2010.045.3.393 |2 doi | |
| 035 | |a (DE-627)OLC2137029235 | ||
| 035 | |a (DE-B1597)claymin.2010.045.3.393-p | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 082 | 0 | 4 | |a 000 |a 550 |q VZ |
| 084 | |a 13 |2 ssgn | ||
| 100 | 1 | |a Clauer, N. |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania |
| 264 | 1 | |c 2010 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
| 338 | |a Band |b nc |2 rdacarrier | ||
| 500 | |a © 2016 by Walter de Gruyter Berlin/Boston | ||
| 520 | |a Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence. | ||
| 700 | 1 | |a Liewig, N. |4 aut | |
| 700 | 1 | |a Bobos, I. |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Clay minerals |d De Gruyter, 1965 |g 45(2010), 3 vom: 01. Sept., Seite 393-411 |w (DE-627)130703907 |w (DE-600)961059-5 |w (DE-576)016252330 |x 0009-8558 |7 nnns |
| 773 | 1 | 8 | |g volume:45 |g year:2010 |g number:3 |g day:01 |g month:09 |g pages:393-411 |
| 856 | 4 | 1 | |u https://doi.org/10.1180/claymin.2010.045.3.393 |z lizenzpflichtig |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a SYSFLAG_A | ||
| 912 | |a GBV_OLC | ||
| 912 | |a SSG-OLC-TEC | ||
| 912 | |a SSG-OLC-CHE | ||
| 912 | |a SSG-OLC-GEO | ||
| 912 | |a SSG-OLC-PHA | ||
| 912 | |a SSG-OPC-GGO | ||
| 912 | |a GBV_ILN_30 | ||
| 912 | |a GBV_ILN_40 | ||
| 912 | |a GBV_ILN_65 | ||
| 912 | |a GBV_ILN_70 | ||
| 912 | |a GBV_ILN_2001 | ||
| 912 | |a GBV_ILN_2026 | ||
| 912 | |a GBV_ILN_2027 | ||
| 912 | |a GBV_ILN_4012 | ||
| 912 | |a GBV_ILN_4219 | ||
| 912 | |a GBV_ILN_4307 | ||
| 912 | |a GBV_ILN_4323 | ||
| 951 | |a AR | ||
| 952 | |d 45 |j 2010 |e 3 |b 01 |c 09 |h 393-411 | ||
| author_variant |
n c nc n l nl i b ib |
|---|---|
| matchkey_str |
article:00098558:2010----::a1onreosritoteeeioamnuiltfoteagiai |
| hierarchy_sort_str |
2010 |
| publishDate |
2010 |
| allfields |
10.1180/claymin.2010.045.3.393 doi (DE-627)OLC2137029235 (DE-B1597)claymin.2010.045.3.393-p DE-627 ger DE-627 rakwb 000 550 VZ 13 ssgn Clauer, N. verfasserin aut K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © 2016 by Walter de Gruyter Berlin/Boston Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence. Liewig, N. aut Bobos, I. aut Enthalten in Clay minerals De Gruyter, 1965 45(2010), 3 vom: 01. Sept., Seite 393-411 (DE-627)130703907 (DE-600)961059-5 (DE-576)016252330 0009-8558 nnns volume:45 year:2010 number:3 day:01 month:09 pages:393-411 https://doi.org/10.1180/claymin.2010.045.3.393 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2001 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_4012 GBV_ILN_4219 GBV_ILN_4307 GBV_ILN_4323 AR 45 2010 3 01 09 393-411 |
| spelling |
10.1180/claymin.2010.045.3.393 doi (DE-627)OLC2137029235 (DE-B1597)claymin.2010.045.3.393-p DE-627 ger DE-627 rakwb 000 550 VZ 13 ssgn Clauer, N. verfasserin aut K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © 2016 by Walter de Gruyter Berlin/Boston Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence. Liewig, N. aut Bobos, I. aut Enthalten in Clay minerals De Gruyter, 1965 45(2010), 3 vom: 01. Sept., Seite 393-411 (DE-627)130703907 (DE-600)961059-5 (DE-576)016252330 0009-8558 nnns volume:45 year:2010 number:3 day:01 month:09 pages:393-411 https://doi.org/10.1180/claymin.2010.045.3.393 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2001 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_4012 GBV_ILN_4219 GBV_ILN_4307 GBV_ILN_4323 AR 45 2010 3 01 09 393-411 |
| allfields_unstemmed |
10.1180/claymin.2010.045.3.393 doi (DE-627)OLC2137029235 (DE-B1597)claymin.2010.045.3.393-p DE-627 ger DE-627 rakwb 000 550 VZ 13 ssgn Clauer, N. verfasserin aut K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © 2016 by Walter de Gruyter Berlin/Boston Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence. Liewig, N. aut Bobos, I. aut Enthalten in Clay minerals De Gruyter, 1965 45(2010), 3 vom: 01. Sept., Seite 393-411 (DE-627)130703907 (DE-600)961059-5 (DE-576)016252330 0009-8558 nnns volume:45 year:2010 number:3 day:01 month:09 pages:393-411 https://doi.org/10.1180/claymin.2010.045.3.393 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2001 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_4012 GBV_ILN_4219 GBV_ILN_4307 GBV_ILN_4323 AR 45 2010 3 01 09 393-411 |
| allfieldsGer |
10.1180/claymin.2010.045.3.393 doi (DE-627)OLC2137029235 (DE-B1597)claymin.2010.045.3.393-p DE-627 ger DE-627 rakwb 000 550 VZ 13 ssgn Clauer, N. verfasserin aut K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © 2016 by Walter de Gruyter Berlin/Boston Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence. Liewig, N. aut Bobos, I. aut Enthalten in Clay minerals De Gruyter, 1965 45(2010), 3 vom: 01. Sept., Seite 393-411 (DE-627)130703907 (DE-600)961059-5 (DE-576)016252330 0009-8558 nnns volume:45 year:2010 number:3 day:01 month:09 pages:393-411 https://doi.org/10.1180/claymin.2010.045.3.393 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2001 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_4012 GBV_ILN_4219 GBV_ILN_4307 GBV_ILN_4323 AR 45 2010 3 01 09 393-411 |
| allfieldsSound |
10.1180/claymin.2010.045.3.393 doi (DE-627)OLC2137029235 (DE-B1597)claymin.2010.045.3.393-p DE-627 ger DE-627 rakwb 000 550 VZ 13 ssgn Clauer, N. verfasserin aut K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © 2016 by Walter de Gruyter Berlin/Boston Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence. Liewig, N. aut Bobos, I. aut Enthalten in Clay minerals De Gruyter, 1965 45(2010), 3 vom: 01. Sept., Seite 393-411 (DE-627)130703907 (DE-600)961059-5 (DE-576)016252330 0009-8558 nnns volume:45 year:2010 number:3 day:01 month:09 pages:393-411 https://doi.org/10.1180/claymin.2010.045.3.393 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2001 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_4012 GBV_ILN_4219 GBV_ILN_4307 GBV_ILN_4323 AR 45 2010 3 01 09 393-411 |
| source |
Enthalten in Clay minerals 45(2010), 3 vom: 01. Sept., Seite 393-411 volume:45 year:2010 number:3 day:01 month:09 pages:393-411 |
| sourceStr |
Enthalten in Clay minerals 45(2010), 3 vom: 01. Sept., Seite 393-411 volume:45 year:2010 number:3 day:01 month:09 pages:393-411 |
| format_phy_str_mv |
Article |
| institution |
findex.gbv.de |
| dewey-raw |
000 |
| isfreeaccess_bool |
false |
| container_title |
Clay minerals |
| authorswithroles_txt_mv |
Clauer, N. @@aut@@ Liewig, N. @@aut@@ Bobos, I. @@aut@@ |
| publishDateDaySort_date |
2010-09-01T00:00:00Z |
| hierarchy_top_id |
130703907 |
| dewey-sort |
0 |
| id |
OLC2137029235 |
| fullrecord |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000naa a22002652 4500</leader><controlfield tag="001">OLC2137029235</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230810075842.0</controlfield><controlfield tag="007">tu</controlfield><controlfield tag="008">230810s2010 xx ||||| 00| ||und c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1180/claymin.2010.045.3.393</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)OLC2137029235</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-B1597)claymin.2010.045.3.393-p</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">000</subfield><subfield code="a">550</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">13</subfield><subfield code="2">ssgn</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Clauer, N.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2010</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">ohne Hilfsmittel zu benutzen</subfield><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Band</subfield><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">© 2016 by Walter de Gruyter Berlin/Boston</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence.</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Liewig, N.</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Bobos, I.</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Clay minerals</subfield><subfield code="d">De Gruyter, 1965</subfield><subfield code="g">45(2010), 3 vom: 01. Sept., Seite 393-411</subfield><subfield code="w">(DE-627)130703907</subfield><subfield code="w">(DE-600)961059-5</subfield><subfield code="w">(DE-576)016252330</subfield><subfield code="x">0009-8558</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:45</subfield><subfield code="g">year:2010</subfield><subfield code="g">number:3</subfield><subfield code="g">day:01</subfield><subfield code="g">month:09</subfield><subfield code="g">pages:393-411</subfield></datafield><datafield tag="856" ind1="4" ind2="1"><subfield code="u">https://doi.org/10.1180/claymin.2010.045.3.393</subfield><subfield code="z">lizenzpflichtig</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_OLC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-TEC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-CHE</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-GEO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-GGO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_30</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_40</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_65</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_70</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2001</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2026</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2027</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4012</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4219</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4307</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4323</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">45</subfield><subfield code="j">2010</subfield><subfield code="e">3</subfield><subfield code="b">01</subfield><subfield code="c">09</subfield><subfield code="h">393-411</subfield></datafield></record></collection>
|
| author |
Clauer, N. |
| spellingShingle |
Clauer, N. ddc 000 ssgn 13 K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania |
| authorStr |
Clauer, N. |
| ppnlink_with_tag_str_mv |
@@773@@(DE-627)130703907 |
| format |
Article |
| dewey-ones |
000 - Computer science, information & general works 550 - Earth sciences |
| delete_txt_mv |
keep |
| author_role |
aut aut aut |
| collection |
OLC |
| remote_str |
false |
| illustrated |
Not Illustrated |
| issn |
0009-8558 |
| topic_title |
000 550 VZ 13 ssgn K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania |
| topic |
ddc 000 ssgn 13 |
| topic_unstemmed |
ddc 000 ssgn 13 |
| topic_browse |
ddc 000 ssgn 13 |
| format_facet |
Aufsätze Gedruckte Aufsätze |
| format_main_str_mv |
Text Zeitschrift/Artikel |
| carriertype_str_mv |
nc |
| hierarchy_parent_title |
Clay minerals |
| hierarchy_parent_id |
130703907 |
| dewey-tens |
000 - Computer science, knowledge & systems 550 - Earth sciences & geology |
| hierarchy_top_title |
Clay minerals |
| isfreeaccess_txt |
false |
| familylinks_str_mv |
(DE-627)130703907 (DE-600)961059-5 (DE-576)016252330 |
| title |
K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania |
| ctrlnum |
(DE-627)OLC2137029235 (DE-B1597)claymin.2010.045.3.393-p |
| title_full |
K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania |
| author_sort |
Clauer, N. |
| journal |
Clay minerals |
| journalStr |
Clay minerals |
| isOA_bool |
false |
| dewey-hundreds |
000 - Computer science, information & general works 500 - Science |
| recordtype |
marc |
| publishDateSort |
2010 |
| contenttype_str_mv |
txt |
| container_start_page |
393 |
| author_browse |
Clauer, N. Liewig, N. Bobos, I. |
| container_volume |
45 |
| class |
000 550 VZ 13 ssgn |
| format_se |
Aufsätze |
| author-letter |
Clauer, N. |
| doi_str_mv |
10.1180/claymin.2010.045.3.393 |
| dewey-full |
000 550 |
| title_sort |
k-ar, $ δ^{18} $o and ree constraints on the genesis of ammonium illite from the harghita bãi hydrothermal system, romania |
| title_auth |
K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania |
| abstract |
Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence. © 2016 by Walter de Gruyter Berlin/Boston |
| abstractGer |
Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence. © 2016 by Walter de Gruyter Berlin/Boston |
| abstract_unstemmed |
Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence. © 2016 by Walter de Gruyter Berlin/Boston |
| collection_details |
GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OPC-GGO GBV_ILN_30 GBV_ILN_40 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2001 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_4012 GBV_ILN_4219 GBV_ILN_4307 GBV_ILN_4323 |
| container_issue |
3 |
| title_short |
K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania |
| url |
https://doi.org/10.1180/claymin.2010.045.3.393 |
| remote_bool |
false |
| author2 |
Liewig, N. Bobos, I. |
| author2Str |
Liewig, N. Bobos, I. |
| ppnlink |
130703907 |
| mediatype_str_mv |
n |
| isOA_txt |
false |
| hochschulschrift_bool |
false |
| doi_str |
10.1180/claymin.2010.045.3.393 |
| up_date |
2024-07-04T07:09:34.155Z |
| _version_ |
1803631433252601856 |
| fullrecord_marcxml |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000naa a22002652 4500</leader><controlfield tag="001">OLC2137029235</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230810075842.0</controlfield><controlfield tag="007">tu</controlfield><controlfield tag="008">230810s2010 xx ||||| 00| ||und c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1180/claymin.2010.045.3.393</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)OLC2137029235</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-B1597)claymin.2010.045.3.393-p</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">000</subfield><subfield code="a">550</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">13</subfield><subfield code="2">ssgn</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Clauer, N.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">K-Ar, $ δ^{18} $O and REE constraints on the genesis of ammonium illite from the Harghita Bãi hydrothermal system, Romania</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2010</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">ohne Hilfsmittel zu benutzen</subfield><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Band</subfield><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">© 2016 by Walter de Gruyter Berlin/Boston</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Ammonium illite and ammonium illite-smectite mixed layers, together with potassium illite, smectite and minute amounts of kaolinite were identified in hydrothermally altered andesite rocks from the Harghita Bãi area of the Eastern Carpathians, Romania. K-Ar dating and oxygen isotope tracing, as well as rare-earth elemental analyses were made to provide new information on the timing and crystal-chemical processes characterizing the crystallization and further evolution of these illite-type mineral phases. The combined results suggest the occurrence of hydrothermal activity in two distinct episodes with nucleation of two generations of illite-type particles of different chemistry and morphology. About 9.5 Ma ago, potassium illite crystallized in alteration halos of the porphyry Cu system, probably at a temperature of ~270°C from fluids having a $ δ^{18} $O of ~2.9‰(V-SMOW). Associated smectite seems to have precipitated slightly later in external alteration halos at a similar temperature, but from fluids depleted in alkalis and with a different $ δ^{18} $O. Alternately, ammonium-rich illite-smectite mixed layers formed very recently, less than ~1 million years ago at a temperature of ~90°C from fluids of probable meteoric origin that altered the previously crystallized potassium illite, resulting in the crystallization of a new generation of ammonium illite-smectite mixed layers. Evidence of this dissolution-precipitation process is provided by a significant increase in the $ δ^{18} $O of the mixed-layer structures and by a significant change in their REE contents and distribution patterns. Occurrence of potassium in the ammonium-rich mixed layers probably relates to the progressive alteration of the first-generation potassium illite and a discrete concomitant take up of released K by the new $ NH_{4-} $ rich interlayers of the ammonium mixed layered sequence.</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Liewig, N.</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Bobos, I.</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Clay minerals</subfield><subfield code="d">De Gruyter, 1965</subfield><subfield code="g">45(2010), 3 vom: 01. Sept., Seite 393-411</subfield><subfield code="w">(DE-627)130703907</subfield><subfield code="w">(DE-600)961059-5</subfield><subfield code="w">(DE-576)016252330</subfield><subfield code="x">0009-8558</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:45</subfield><subfield code="g">year:2010</subfield><subfield code="g">number:3</subfield><subfield code="g">day:01</subfield><subfield code="g">month:09</subfield><subfield code="g">pages:393-411</subfield></datafield><datafield tag="856" ind1="4" ind2="1"><subfield code="u">https://doi.org/10.1180/claymin.2010.045.3.393</subfield><subfield code="z">lizenzpflichtig</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_OLC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-TEC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-CHE</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-GEO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-GGO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_30</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_40</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_65</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_70</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2001</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2026</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2027</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4012</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4219</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4307</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4323</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">45</subfield><subfield code="j">2010</subfield><subfield code="e">3</subfield><subfield code="b">01</subfield><subfield code="c">09</subfield><subfield code="h">393-411</subfield></datafield></record></collection>
|
| score |
7.4001455 |