TY - JOUR
T1 - Stracherite, BaCa6(SiO4)2[(PO4)(CO3)]F, the first CO3-bearing intercalated hexagonal antiperovskite from Negev Desert, Israel
AU - Galuskin, Evgeny V.
AU - Krüger, Biljana
AU - Galuskina, Irina O.
AU - Krüger, Hannes
AU - Vapnik, Yevgeny
AU - Pauluhn, Anuschka
AU - Olieric, Vincent
N1 - Funding Information:
The authors thank Elena Sokolova and Fernando Camara for their careful review that improved the manuscript. The investigations were partially supported by the National Science Centre (NCN) of Poland, grant no. 2016/23/B/ST10/00869. The authors are grateful to Thomas Armbruster for helpful discussion.
Publisher Copyright:
© 2018 Walter de Gruyter GmbH, Berlin/Boston.
PY - 2018/10/25
Y1 - 2018/10/25
N2 - The new mineral stracherite, BaCa6(SiO4)2[(PO4)(CO3)]F [R3m, a = 7.0877(5), c = 25.201(2), V = 1096.4(1)3, Z = 3], belongs to the zadovite group, which also includes zadovite, BaCa6[(SiO4)(PO4)](PO4)2F; aradite, BaCa6[(SiO4)(VO4)](VO4)2F; and gazeevite, BaCa6(SiO4)2(SO4)2O. All minerals of this group exhibit single-layer antiperovskite modules, which are intercalated with tetrahedral layers. In stracherite, the first CO3-bearing intercalated hexagonal antiperovskite, about 38% of the (PO4)3- tetrahedra are randomly substituted by planar (CO3)2- groups. The mineral was discovered in spurrite rocks of the Hatrurim Complex in the Negev Desert near Arad, Israel. Associated minerals are spurrite, calcite, brownmillerite, shulamitite, CO3-bearing fluorapatite, fluormayenite-fluorkyuygenite, and ariegilatite. The empirical formula of stracherite is: (Ba0.96K0.02Na0.01)S0.99Ca6.01[(SiO4)1.86 (PO4)0.12(AlO4)0.01(TiO4)0.01]S2[(PO4)1.05(CO3)0.75(SO4)0.18(VO4)0.02]S2(F0.95O0.03)S0.98. Poikilitic crystals of stracherite are up to 0.5 mm in size and are confined to re-crystallization zones of spurrite marbles under the influence of by-products (gases, fluids) of combustion metamorphism..
AB - The new mineral stracherite, BaCa6(SiO4)2[(PO4)(CO3)]F [R3m, a = 7.0877(5), c = 25.201(2), V = 1096.4(1)3, Z = 3], belongs to the zadovite group, which also includes zadovite, BaCa6[(SiO4)(PO4)](PO4)2F; aradite, BaCa6[(SiO4)(VO4)](VO4)2F; and gazeevite, BaCa6(SiO4)2(SO4)2O. All minerals of this group exhibit single-layer antiperovskite modules, which are intercalated with tetrahedral layers. In stracherite, the first CO3-bearing intercalated hexagonal antiperovskite, about 38% of the (PO4)3- tetrahedra are randomly substituted by planar (CO3)2- groups. The mineral was discovered in spurrite rocks of the Hatrurim Complex in the Negev Desert near Arad, Israel. Associated minerals are spurrite, calcite, brownmillerite, shulamitite, CO3-bearing fluorapatite, fluormayenite-fluorkyuygenite, and ariegilatite. The empirical formula of stracherite is: (Ba0.96K0.02Na0.01)S0.99Ca6.01[(SiO4)1.86 (PO4)0.12(AlO4)0.01(TiO4)0.01]S2[(PO4)1.05(CO3)0.75(SO4)0.18(VO4)0.02]S2(F0.95O0.03)S0.98. Poikilitic crystals of stracherite are up to 0.5 mm in size and are confined to re-crystallization zones of spurrite marbles under the influence of by-products (gases, fluids) of combustion metamorphism..
KW - CO3, Raman
KW - Hatrurim Complex
KW - Stracherite
KW - intercalated hexagonal antiperovskites
KW - new mineral
KW - pyrometamorphic rocks
KW - zadovite group
UR - http://www.scopus.com/inward/record.url?scp=85043601092&partnerID=8YFLogxK
U2 - 10.2138/am-2018-6493
DO - 10.2138/am-2018-6493
M3 - Article
AN - SCOPUS:85043601092
SN - 0003-004X
VL - 103
SP - 1699
EP - 1706
JO - American Mineralogist
JF - American Mineralogist
IS - 10
ER -