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Muscovite & Topaz On Feldspar

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SMS1152847

Description Tabs

Description
Locality: 
Spitzkopje Area, Karibib, Erongo Region, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5.8 × 4.1 cm
Weight: 
149.23gr
Description

The specimen has concentration and scatterings of green grey muscovite on the corroded surface of a crystal feldspar. One side of the crystal has a dedicated deposit of small crystals of topaz lying edge to edge.

Mineral Data
What's on the rock

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White

Feldspar

Group Parent: 
Feldspar Group

Current price

$

Starting price

$10
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Start 27 Nov 18:00
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Shipping Information

Postage Area Price
Europe up to 500 grams
$12
Europe up to 1 kilogram
$16
United States up to 500 grams
$14
United States up to 1 kilogram
$18
Rest of world up to 500 grams
$14
Rest of world up to 1 kilogram
$18

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Bid History

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