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Martinite & Erdite

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SYM122814

Martinite & Erdite

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.4 × 0.5 cm
Description

Two whitish martinite clusters. One with coppery erdite sticks. The other very nice rosette cluster. There are also erdite crystals in analcime and orange to pink eudyalte.

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