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Lepidolite

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DVE92418

Lepidolite

Ex-David J. Eicher Collection; ex-John H. Eicher Collection

Description Tabs

Description
Locality: 
Black Hills, Lawrence County, South Dakota, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 4.2 × 3 cm
Description

Bright yellow lepidolite crystals covering a whitish matrix from this unusual locality in the United States.

An unusual, old-time specimen collected in the 1940s.

Mineral Data
What's on the rock

Lepidolite

Synonym Of: 

Mica Group

Formula: 
KLi2Al(Si4O10)(F,OH)2 to K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Group Parent: 
Mica
Hardness: 
2.5 - 3.5
Colour: 
Pink, light purple, light rose red
Streak: 
White
David J. Eicher

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