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Orthoclase

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JJH865203

Orthoclase

Self collected
Pseudomorph

Description Tabs

Description
Locality: 
Melbur China Clay Pit, St Stephen-in-Brannel, Cornwall, United Kingdom
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.5 × 6 × 3.8 cm
Largest Crystal: 
6.00cm
Weight: 
56.00gr
Description

A pseudomorph of Kaolinite / sericite (white mica) after orthoclase showing Carlsbad twinning with a further smaller Carlsbad twin penetrating the upper prism face of the larger crystal.

Collected: 
09/11/2008
Mineral Data
What's on the rock

Orthoclase

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Hardness: 
6.0
Streak: 
White

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£60
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