ICATE 21876
INSTITUTO DE CIENCIAS ASTRONOMICAS, DE LA TIERRA Y DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
The silico-phosphate Tsangpoite and Mathyite provide new constraints to the metasomatic process in the angrite D?fOrbigny
Autor/es:
CHU, HAO-TSU; MARIA EUGENIA VARELA; HWANG, SHYH-LUNG; YUI, TZEN-FU; SHEN, POUYAN; IIZUKA, YOSHIYUKI
Lugar:
Houston
Reunión:
Conferencia; Lunar and Planetary Science Conference; 2019
Resumen:
Tsangpoite, ideally Ca5(PO4)2SiO4,the hexagonal polymorph of silicocarnotite (IMA2014-110, [1]), and matyhite, ideally (Ca18(Ca1? 1) Fe2P14O56), the Fe-analogue of Ca-merrillite (2015-121, [2]), were identified in the D'Orbigny angrite meteorite. The study of these two new phosphates -previously described as silica-phosphate in the angrite D?fOrbigny [3-4]- help to advance in the comprehension of the metasomatic processes which led to enrichments in FeO and MnO that highly modify the Mg-rich composition of the olivines to the one seen now [5]
