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Bismutotantalite from
La Elvirita mine, El Quemado district, Nevados de Palermo, La Poma department, Salta Province, Argentina

Locality type:Mine
Comments:"A fresh, cm-sized crystal, dark grey with a greasy luster and D = 8.809 g/cm3, was examined. In reflected light, it is grey with very weak bireflectance; two phases can be distinguished. Electron-microprobe analysis gives the host bismutotantalite [Bi] as (Bi0.98Sb0.02)(Ta0.89Nb0.11)O4; the subsidiary phase [Bi,Sb], (Bi0.68Sb0.32)(Ta0.89Nb0.11)O4"
Colour:dark grey
Quality for species:Good crystals or rich for species - important (!)
Confirmation Methods:XRD
References:Galliski et al. (2001) Bismutotantalite from northwestern Argentina: description and crystal structure. Canadian Mineralogist Vol. 39, pp. 103-110.
Mineral Data:Click here to view Bismutotantalite data
Locality Data:Click here to view La Elvirita mine, El Quemado district, Nevados de Palermo, La Poma department, Salta Province, Argentina
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