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Martinite & Erdite

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SYM530264

Martinite & Erdite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.9 × 0.5 × 0.5 cm
Description

Well formed hexagonal pinkish plates of martinite with red sticks of erdite in matrix.

Mineral Data
What's on the rock

Martinite

Formula: 
(Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2·4H2O
Strunz: 
9.EE.80
Hardness: 
0.0
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Erdite

Formula: 
NaFeS2·2H2O
Strunz: 
2.FD.20
Crystal System: 
Monoclinic
Hardness: 
2.0
Streak: 
Black
Type Locality: 
Coyote Peak, Coastal Range, Humboldt Co., California, USA