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Benitoite Joaquinite & Neptunite

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MNR65134

Benitoite Joaquinite & Neptunite

Classic Locality

Description Tabs

Description
Locality: 
Benitoite Mine, San Benito County, California, United States of America
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.7 × 10 × 5.5 cm
Largest Crystal: 
1.00cm
Description

Large piece of crossite matrix with white natrolite with several nice benitoite crystals/crystal clusters. Single benitoite crystals are around 1 cm. The piece is enriched with one neptunite crystal in the vug and numerous orange single crystals of joaquinite up to 1 mm.

Highly fluorescent under SW!

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