Boralsilite Grandidierite Image |
Mineral: | Boralsilite: Al16B6Si2O27 Grandidierite: (Mg,Fe++)Al3(BO4)(SiO4)O | |||||
Comments: | B&W PPL image of aggregates of boralsilite in quartz near grandidierite. Pyrite is partially replaced by oxide. Abbrev: A+B = Secondary andalusite, B = boralsilite, G = grandidierite, P = pyrite, Q = quartz. (AmMin v93:294). | |||||
Location: | Pegmatites from the Larsemann Hills, East Antarctica. | |||||
Scale: | See Image. | |||||
Copyright: | © American Mineralogist | |||||
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