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Smithsonite On Coronadite

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Smithsonite On Coronadite

Classic Locality

Description Tabs

Description
Locality: 
Broken Hill, New South Wales, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.2 × 4.5 × 3.5 cm
Description

An absoloute textbook type Broken Hill specimen. These beautiful grey to white balls of compact crystals simply sparkle. They sit proud on a surface shell of coronadite Pb(Mn,Mn)8O16. which in turn has formed on a layer of radiating goethite. The specimen is beautifully balanced and sits well for display. Pristine condition - no dings anywhere !!

Mineral Data
What's on the rock

Smithsonite

Formula: 
ZnCO3
Strunz: 
5.AB.05
Hardness: 
4.0 - 4.5
Streak: 
White

Coronadite

Formula: 
Pb(Mn4+6Mn3+2)O16
Strunz: 
4.DK.05a
Hardness: 
4.5 - 5.0
Type Locality: 
Horse-Shoe shaft (Horseshoe Mine), Coronado Mine (Coronado Mining Co. property; Arizona Copper Co. group [in part]), Coronado vein, Copper Plate Gulch, Copper Mountain District (Clifton-Morenci District), Shannon Mts, Greenlee Co., Arizona, USA
Gondwana Minerals