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Köttigite & Austinite

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BCK717701

Köttigite & Austinite

Martin Jensen collection

Description Tabs

Description
Locality: 
Clan Alpine Mountains, Alpine District, Churchill County, Nevada, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.3 × 1.6 cm
Description

You are bidding on an incredible thumbnail sample from the Martin Jensen collection with intense, sharp crystals of cobaltian kottigite on bismuthian heterogenite with balls of cuprian austinite crystals. Martin obtained this sample from Tom Lugaski from Mackay School of Mines in 1990. The exact coordinates of the locality are listed on the label. Stunningly colorful piece! 

Mineral Data
What's on the rock

Köttigite

Formula: 
Zn3(AsO4)2·8H2O
Strunz: 
8.CE.40
Crystal System: 
Monoclinic Prismatic crystals or crusts
Hardness: 
2.5 - 3.0
Type Locality: 
Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Austinite

Formula: 
CaZn(AsO4)(OH)
Strunz: 
8.BH.35
Crystal System: 
Orthorhombic
Hardness: 
4.0 - 4.5
Streak: 
White
Type Locality: 
Gold Hill Mine (Western Utah Mine), Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA

Seller Information

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