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Siderophyllite Polylithionite

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NSS500942

Siderophyllite Polylithionite

Description Tabs

Description
Locality: 
Cínovec/Zinnwald, Teplice, Ústí nad Labem Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 10 × 6 cm
Description

green cristals of zinwaldite,rare mica from type locality.

zinwaldite is discedited

Mineral Data
What's on the rock

Siderophyllite

Formula: 
KFe2+2Al(Al2Si2O10)(OH)2
Strunz: 
9.EC.20
Hardness: 
2.5
Type Locality: 
Pikes Peak, El Paso Co., Colorado, USA

Polylithionite

Formula: 
KLi2Al(Si4O10)(F,OH)2
Strunz: 
9.EC.20
Hardness: 
2.0 - 3.0
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland

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