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Cornwallite & Parnauite

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SER596507

Cornwallite & Parnauite

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Description
Locality: 
Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 2.9 × 1.9 cm
Description

Several emerald green balls of cornwallite with blue-green crystals of parnauite

Mineral Data
What's on the rock

Cornwallite

Formula: 
Cu5(AsO4)2(OH)4
Strunz: 
8.BD.05
Crystal System: 
Monoclinic
Hardness: 
4.5
Type Locality: 
Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK

Parnauite

Formula: 
Cu9(AsO4)2(SO4)(OH)10·7H2O
Strunz: 
8.DF.35
Hardness: 
0.0
Type Locality: 
Majuba Hill Mine (Majuba Mine; Mylar Mine; Tin Mine; Nevada Bureau of Mines and Geology sample sites 2844 & 2846), Antelope District, Pershing Co., Nevada, USA

Current price

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Starting price

$9
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Start 19 Aug 18:00
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