Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina
- Autores
- Kampf, Anthony R.; Colombo, Fernando; González del Tánago, José
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Gayite, ideally NaMn2+Fe3+5 (PO 4)4(OH)6·2H2O, is a new member of the dufrénite group found at the Gigante granitic pegmatite, Punilla department, Córdoba province, Argentina. It is named for Hebe D. Gay (b. 1927), Professor Emeritus of Mineralogy of the National University of Córdoba (Argentina). The new mineral is monoclinic, space group C2/c, a = 25.975(3) Å, b = 5.1766(3) Å, c = 13.929(1) Å, β = 111.293(2)°, Z = 4. The strongest lines in the X-ray powder diffraction pattern are [d in Å, (I)]: 12.054 (33), 5.045 (60), 4.147 (37), 3.424 (71), 3.179 (100), 3.004 (33), 2.881 (42), 2.426 (36), 2.109 (39), 1.585 (50). It occurs associated with morinite, natrodufrénite, and quartz in cavities in massive apatite-(CaF), as clusters of tabular crystals up to 130 μm on edge dominated by {100}, with subordinate {201̄} and possibly also {110}, {111}, and {111̄}. Crystals display striations parallel to [010]. The mineral is greenish black with an olive green streak and vitreous luster. Thin tablets are transparent. Gayite is brittle, with perfect {100} cleavage and irregular fracture. Its Mohs hardness is 4 to 5. The measured density is 3.15(5) g/cm3, and the calculated density is 3.241 g/cm3. The mineral dissolves slowly in dilute HCl. Gayite is biaxial (+), α = 1.787(3), β = 1.792(3), γ = 1.806(3), 2Vmeas = 60(5)°, 2Vcalc = 62.1°; moderate dispersion, r < v; strong pleochroism, X (bluish-green) > Z (orange) > Y (yellow); orientation Y = b, X ∧ a = 48° in obtuse β. Analysis by electron microprobe (average of 28 analyses given in wt%) provided TiO2 0.12, Al 2O3 3.10, Fe2O3 41.95, MnO 5.97, MgO 0.08, CaO 0.23, ZnO 0.15, Na2O 3.03, P2O5 32.73, and H2O (calculated by stoichiometry) 10.31, total 97.67 wt%. The empirical formula, based on 24 O, is (Na0.85Ca0..02) ∑0.87 (Mn0.742+Fe0.12 2+Mg0.02Zn0.02Ti0.01) 4+∑0.90 (Fe4.473+Al 0.53)∑5.00 (P4.03O16)(OH) 6·2H2O. The crystal structure (R1 = 6.10%) shows gayite to be a member of the dufrénite group, along with dufrénite, natrodufrénite, matioliite, and burangaite. The structure is a framework consisting of Fe3+O6 octahedra, Mn2+O6octahedra, and PO4 tetrahedra with channels along the b axis containing Na atoms. The most unusual feature of the structure is an octahedral face-sharing Fe3+-Mn2+-Fe 3+ trimer.
Fil: Kampf, Anthony R.. Natural History Museum Of Los Angeles County; Estados Unidos
Fil: Colombo, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: González del Tánago, José. Universidad Complutense de Madrid; España - Materia
-
Argentina
Córdoba
Dufrénite Group
Gayite
New Mineral
Pegmatite Phosphate - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/55346
Ver los metadatos del registro completo
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spelling |
Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, ArgentinaKampf, Anthony R.Colombo, FernandoGonzález del Tánago, JoséArgentinaCórdobaDufrénite GroupGayiteNew MineralPegmatite Phosphatehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Gayite, ideally NaMn2+Fe3+5 (PO 4)4(OH)6·2H2O, is a new member of the dufrénite group found at the Gigante granitic pegmatite, Punilla department, Córdoba province, Argentina. It is named for Hebe D. Gay (b. 1927), Professor Emeritus of Mineralogy of the National University of Córdoba (Argentina). The new mineral is monoclinic, space group C2/c, a = 25.975(3) Å, b = 5.1766(3) Å, c = 13.929(1) Å, β = 111.293(2)°, Z = 4. The strongest lines in the X-ray powder diffraction pattern are [d in Å, (I)]: 12.054 (33), 5.045 (60), 4.147 (37), 3.424 (71), 3.179 (100), 3.004 (33), 2.881 (42), 2.426 (36), 2.109 (39), 1.585 (50). It occurs associated with morinite, natrodufrénite, and quartz in cavities in massive apatite-(CaF), as clusters of tabular crystals up to 130 μm on edge dominated by {100}, with subordinate {201̄} and possibly also {110}, {111}, and {111̄}. Crystals display striations parallel to [010]. The mineral is greenish black with an olive green streak and vitreous luster. Thin tablets are transparent. Gayite is brittle, with perfect {100} cleavage and irregular fracture. Its Mohs hardness is 4 to 5. The measured density is 3.15(5) g/cm3, and the calculated density is 3.241 g/cm3. The mineral dissolves slowly in dilute HCl. Gayite is biaxial (+), α = 1.787(3), β = 1.792(3), γ = 1.806(3), 2Vmeas = 60(5)°, 2Vcalc = 62.1°; moderate dispersion, r < v; strong pleochroism, X (bluish-green) > Z (orange) > Y (yellow); orientation Y = b, X ∧ a = 48° in obtuse β. Analysis by electron microprobe (average of 28 analyses given in wt%) provided TiO2 0.12, Al 2O3 3.10, Fe2O3 41.95, MnO 5.97, MgO 0.08, CaO 0.23, ZnO 0.15, Na2O 3.03, P2O5 32.73, and H2O (calculated by stoichiometry) 10.31, total 97.67 wt%. The empirical formula, based on 24 O, is (Na0.85Ca0..02) ∑0.87 (Mn0.742+Fe0.12 2+Mg0.02Zn0.02Ti0.01) 4+∑0.90 (Fe4.473+Al 0.53)∑5.00 (P4.03O16)(OH) 6·2H2O. The crystal structure (R1 = 6.10%) shows gayite to be a member of the dufrénite group, along with dufrénite, natrodufrénite, matioliite, and burangaite. The structure is a framework consisting of Fe3+O6 octahedra, Mn2+O6octahedra, and PO4 tetrahedra with channels along the b axis containing Na atoms. The most unusual feature of the structure is an octahedral face-sharing Fe3+-Mn2+-Fe 3+ trimer.Fil: Kampf, Anthony R.. Natural History Museum Of Los Angeles County; Estados UnidosFil: Colombo, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: González del Tánago, José. Universidad Complutense de Madrid; EspañaMineralogical Society of America2010-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/55346Kampf, Anthony R.; Colombo, Fernando; González del Tánago, José; Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina; Mineralogical Society of America; American Mineralogist; 95; 2-3; 2-2010; 386-3910003-004XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/msa/ammin/article/95/2-3/386-391/45108info:eu-repo/semantics/altIdentifier/doi/10.2138/am.2010.3299info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:29:59Zoai:ri.conicet.gov.ar:11336/55346instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:30:00.158CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina |
title |
Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina |
spellingShingle |
Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina Kampf, Anthony R. Argentina Córdoba Dufrénite Group Gayite New Mineral Pegmatite Phosphate |
title_short |
Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina |
title_full |
Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina |
title_fullStr |
Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina |
title_full_unstemmed |
Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina |
title_sort |
Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina |
dc.creator.none.fl_str_mv |
Kampf, Anthony R. Colombo, Fernando González del Tánago, José |
author |
Kampf, Anthony R. |
author_facet |
Kampf, Anthony R. Colombo, Fernando González del Tánago, José |
author_role |
author |
author2 |
Colombo, Fernando González del Tánago, José |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Argentina Córdoba Dufrénite Group Gayite New Mineral Pegmatite Phosphate |
topic |
Argentina Córdoba Dufrénite Group Gayite New Mineral Pegmatite Phosphate |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Gayite, ideally NaMn2+Fe3+5 (PO 4)4(OH)6·2H2O, is a new member of the dufrénite group found at the Gigante granitic pegmatite, Punilla department, Córdoba province, Argentina. It is named for Hebe D. Gay (b. 1927), Professor Emeritus of Mineralogy of the National University of Córdoba (Argentina). The new mineral is monoclinic, space group C2/c, a = 25.975(3) Å, b = 5.1766(3) Å, c = 13.929(1) Å, β = 111.293(2)°, Z = 4. The strongest lines in the X-ray powder diffraction pattern are [d in Å, (I)]: 12.054 (33), 5.045 (60), 4.147 (37), 3.424 (71), 3.179 (100), 3.004 (33), 2.881 (42), 2.426 (36), 2.109 (39), 1.585 (50). It occurs associated with morinite, natrodufrénite, and quartz in cavities in massive apatite-(CaF), as clusters of tabular crystals up to 130 μm on edge dominated by {100}, with subordinate {201̄} and possibly also {110}, {111}, and {111̄}. Crystals display striations parallel to [010]. The mineral is greenish black with an olive green streak and vitreous luster. Thin tablets are transparent. Gayite is brittle, with perfect {100} cleavage and irregular fracture. Its Mohs hardness is 4 to 5. The measured density is 3.15(5) g/cm3, and the calculated density is 3.241 g/cm3. The mineral dissolves slowly in dilute HCl. Gayite is biaxial (+), α = 1.787(3), β = 1.792(3), γ = 1.806(3), 2Vmeas = 60(5)°, 2Vcalc = 62.1°; moderate dispersion, r < v; strong pleochroism, X (bluish-green) > Z (orange) > Y (yellow); orientation Y = b, X ∧ a = 48° in obtuse β. Analysis by electron microprobe (average of 28 analyses given in wt%) provided TiO2 0.12, Al 2O3 3.10, Fe2O3 41.95, MnO 5.97, MgO 0.08, CaO 0.23, ZnO 0.15, Na2O 3.03, P2O5 32.73, and H2O (calculated by stoichiometry) 10.31, total 97.67 wt%. The empirical formula, based on 24 O, is (Na0.85Ca0..02) ∑0.87 (Mn0.742+Fe0.12 2+Mg0.02Zn0.02Ti0.01) 4+∑0.90 (Fe4.473+Al 0.53)∑5.00 (P4.03O16)(OH) 6·2H2O. The crystal structure (R1 = 6.10%) shows gayite to be a member of the dufrénite group, along with dufrénite, natrodufrénite, matioliite, and burangaite. The structure is a framework consisting of Fe3+O6 octahedra, Mn2+O6octahedra, and PO4 tetrahedra with channels along the b axis containing Na atoms. The most unusual feature of the structure is an octahedral face-sharing Fe3+-Mn2+-Fe 3+ trimer. Fil: Kampf, Anthony R.. Natural History Museum Of Los Angeles County; Estados Unidos Fil: Colombo, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina Fil: González del Tánago, José. Universidad Complutense de Madrid; España |
description |
Gayite, ideally NaMn2+Fe3+5 (PO 4)4(OH)6·2H2O, is a new member of the dufrénite group found at the Gigante granitic pegmatite, Punilla department, Córdoba province, Argentina. It is named for Hebe D. Gay (b. 1927), Professor Emeritus of Mineralogy of the National University of Córdoba (Argentina). The new mineral is monoclinic, space group C2/c, a = 25.975(3) Å, b = 5.1766(3) Å, c = 13.929(1) Å, β = 111.293(2)°, Z = 4. The strongest lines in the X-ray powder diffraction pattern are [d in Å, (I)]: 12.054 (33), 5.045 (60), 4.147 (37), 3.424 (71), 3.179 (100), 3.004 (33), 2.881 (42), 2.426 (36), 2.109 (39), 1.585 (50). It occurs associated with morinite, natrodufrénite, and quartz in cavities in massive apatite-(CaF), as clusters of tabular crystals up to 130 μm on edge dominated by {100}, with subordinate {201̄} and possibly also {110}, {111}, and {111̄}. Crystals display striations parallel to [010]. The mineral is greenish black with an olive green streak and vitreous luster. Thin tablets are transparent. Gayite is brittle, with perfect {100} cleavage and irregular fracture. Its Mohs hardness is 4 to 5. The measured density is 3.15(5) g/cm3, and the calculated density is 3.241 g/cm3. The mineral dissolves slowly in dilute HCl. Gayite is biaxial (+), α = 1.787(3), β = 1.792(3), γ = 1.806(3), 2Vmeas = 60(5)°, 2Vcalc = 62.1°; moderate dispersion, r < v; strong pleochroism, X (bluish-green) > Z (orange) > Y (yellow); orientation Y = b, X ∧ a = 48° in obtuse β. Analysis by electron microprobe (average of 28 analyses given in wt%) provided TiO2 0.12, Al 2O3 3.10, Fe2O3 41.95, MnO 5.97, MgO 0.08, CaO 0.23, ZnO 0.15, Na2O 3.03, P2O5 32.73, and H2O (calculated by stoichiometry) 10.31, total 97.67 wt%. The empirical formula, based on 24 O, is (Na0.85Ca0..02) ∑0.87 (Mn0.742+Fe0.12 2+Mg0.02Zn0.02Ti0.01) 4+∑0.90 (Fe4.473+Al 0.53)∑5.00 (P4.03O16)(OH) 6·2H2O. The crystal structure (R1 = 6.10%) shows gayite to be a member of the dufrénite group, along with dufrénite, natrodufrénite, matioliite, and burangaite. The structure is a framework consisting of Fe3+O6 octahedra, Mn2+O6octahedra, and PO4 tetrahedra with channels along the b axis containing Na atoms. The most unusual feature of the structure is an octahedral face-sharing Fe3+-Mn2+-Fe 3+ trimer. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-02 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/55346 Kampf, Anthony R.; Colombo, Fernando; González del Tánago, José; Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina; Mineralogical Society of America; American Mineralogist; 95; 2-3; 2-2010; 386-391 0003-004X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/55346 |
identifier_str_mv |
Kampf, Anthony R.; Colombo, Fernando; González del Tánago, José; Gayite, a new dufrénite-group mineral from the Gigante granitic pegmatite, Córdoba province, Argentina; Mineralogical Society of America; American Mineralogist; 95; 2-3; 2-2010; 386-391 0003-004X CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/msa/ammin/article/95/2-3/386-391/45108 info:eu-repo/semantics/altIdentifier/doi/10.2138/am.2010.3299 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Mineralogical Society of America |
publisher.none.fl_str_mv |
Mineralogical Society of America |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614308054433792 |
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13.070432 |