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Benitoite Neptunite & Natrolite

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VCV156026

Benitoite Neptunite & Natrolite

Description Tabs

Description
Locality: 
Benitoite Mine, San Benito County, California, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 4.1 × 2.5 cm
Largest Crystal: 
0.70cm
Description

A rare triple terminated, very sharp benitoite crystal rests on white natrolite matrix.

Another small gemmy benitoite cluster and neptunite crystals lie to one side of the matrix.

The benitoite crystals are a beautiful gemmy deep blue.

Mineral Data
What's on the rock

Benitoite

Formula: 
BaTi(Si3O9)
Strunz: 
9.CA.05
Crystal System: 
Hexagonal
Hardness: 
6.0 - 6.5
Type Locality: 
California State Gem Mine (Dallas Gem Mine; Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California, USA

Neptunite

Formula: 
Na2KLi(Fe2+,Mn2+)2Ti2(Si8O24)
Strunz: 
9.EH.05
Hardness: 
5.0 - 6.0
Colour: 
Black
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany
Vic's Vugh Minerals