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Siderite

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RPL890990

Siderite

Classic Locality

Description Tabs

Description
Locality: 
Herodsfoot Mine, Lanreath, Cornwall, United Kingdom
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7 × 4 cm
Largest Crystal: 
0.30cm
Weight: 
453.00gr
Description

A vuggy specimen of killas covered on one side with quartz crystals. There are several white pseudomorphs of quartz after baryte; there are dozens of small octahedral galena and tan siderite crystals with composite faces or saddle shaped crystals. There are also a couple of minor patches of crystalline bournonite. Four minerals and a pseudomorph of a fifth on one specimen.

Condition
General: 
Good - locality specimen
Main Display: 
Fair - some contacts/broken crystals
Lustre: 
Bright metallic
Mineral Data
What's on the rock

Siderite

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

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