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Eudidymite & Genthelvite

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SYM1055287

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 1.2 × 0.7 cm
Description

Very nice crystal cluster of epididymite crystals with white genthelvite crystals.  

Mineral Data
What's on the rock

Eudidymite

Formula: 
Na2Be2Si6O15·H2O
Strunz: 
9.DG.60
Hardness: 
6.0
Type Locality: 
Eudidymite locality, Lille Arøya (Midtre Arøy; Øvre Arøy; Övre-Arö), Langesundsfjorden, Larvik, Vestfold, Norway

Genthelvite

Formula: 
Zn4(Be3Si3O12)S
Strunz: 
9.FB.10
Hardness: 
6.0 - 6.5
Type Locality: 
West Cheyenne Canon, Cheyenne District (St. Peters Dome District), El Paso Co., Colorado, USA