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Trilithionite

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GND86059

Trilithionite

Rare Mineral

Description Tabs

Description
Locality: 
Londonderry Li Deposit, Nepean, Western Australia, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 5.4 × 2.8 cm
Description

Nice compact radiating crystals of this purple lithium mica associated with white cleavelandite.

Such material may often be listed as lepidoliite, but this only refers to a group of such micas, not a species. Analysis on specimens from here confirms this to be trilithionite.

Mineral Data
What's on the rock

Trilithionite

Formula: 
K(Li1.5Al1.5)(AlSi3O10)(F,OH)2
Strunz: 
9.EC.20
Crystal System: 
Monoclinic
Hardness: 
0.0
Gondwana Minerals