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Amethyst With Crandallite

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MMM47065

Amethyst With Crandallite

Description Tabs

Description
Locality: 
Wheal Jane, Kea, Cornwall, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 6.5 × 4 cm
Description

A rare and pretty specimen displaying amethystine quartz with an overgrowth of smaller crystals sitting on a thin base of pyrite with a good coverage of micro crystalline crandallite.

From the 15 Level, South Lode, Wheal Jane Mine.

Mineral Data
What's on the rock

Amethyst

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0
Colour: 
Purple

Crandallite

Formula: 
CaAl3(PO4)2(OH)5·H2O
Strunz: 
8.BL.10
Crystal System: 
Trigonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Brooklyn Mine, Silver City, Tintic District, East Tintic Mts, Juab Co., Utah, USA