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Sillimanite


Sillimanite : Al2[O|SiO4]

Photo Copyright © Rob Lavinsky & irocks.com  - This image is copyrighted. Unauthorized reproduction prohibited.
The first of three remarkable crystals of this usually-boring species, brought back from Sri Lanka personally by a friend of mine about 15 years ago. This doubly-terminated crystal is partially etched, but clearly shows both terminations 3 x 0.6 x 0.4 cm



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