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Unk 3

Locality: Rollstone Hill Quarry, Fitchburg, Worcester Co., Massachusetts, USA

White spheres were found in a fluorapatite-rich pegmatite vein associated with fluorapatite and schorl; possibly a clay mineral or a secondary form of apatite. FOV~ 4mm. P. Cristofono specimen and photo.

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Photo added: 12th Feb 2012

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