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Varlamoffite & Cassiterite

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RPL670541

Varlamoffite & Cassiterite

Rare Mineral

Description Tabs

Description
Locality: 
Cligga Mine, Perranzabuloe, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 5 × 4 cm
Largest Crystal: 
0.40cm
Weight: 
167.00gr
Description

A granite and opaque quartz matrix is covered on one side with canary yellow varlamoffite and a scattering of black and brown cassiterite crystals and blebs. There is also minor gilbertite and tourmaline  for interest. Quite a rich location specimen.

Previous labels supplied (not photographed)
Mineral Data
What's on the rock

Varlamoffite

Formula: 
(Sn,Fe)(O,OH)2
Strunz: 
4.DB.05
Hardness: 
6 - 6.5
Colour: 
Yellow
Streak: 
Light Yellow
Type Locality: 
Kalima, Maniema, Democratic Republic of Congo (Zaïre)

Cassiterite

Formula: 
SnO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal
Hardness: 
6.0 - 7.0

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