For your consideration is this very nice large well-formed brown 
P a r i s i t e - (C e) crystal from the Snowbird mine, Fish Creek, Alberton, Mineral County, Montana USA. The Snowbird mine, which exploits an REE-rich carbonatite dike, is one of the classic worldwide localities for P a r i s i t e - (C e). Recently, I was able to obtain a group of exceptional specimens of this unusual REE species directly from the person that collected them. Most parisite crystals at this locality are <2 cm., this is an excellent large (6.2 cm) specimen of this species for this mine! Rare!!

Specimen Dimensions: 6.2 x 1 x 1.2 cm. Weight: 22 grams 

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