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Siderite On Amethyst

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MMM34849

Siderite On Amethyst

Description Tabs

Description
Locality: 
Wheal Drea, Cornwall, United Kingdom
Size Range: 
Small cabinet (7-10 cm)
Size: 
5 × 7 × 3 cm
Description

A cavity in amethystine quartz lined with sugar quartz and bow tie siderite crystals.

Jasper matrix.

Mineral Data
What's on the rock

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

Amethyst

Variety Of: 

Quartz

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