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Smithsonite On Coronadite

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PJM45888

Smithsonite On Coronadite

Ex David Herkstch Collection (Sydney)

Description Tabs

Description
Locality: 
Proprietary Mine, Broken Hill, New South Wales, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 5.8 × 5.1 cm
Description

This is an old and classic specimen of a smithsonite over a  coronadite/psilomelane stalactite. it is reported from a cavity opened in 1926 that had stalactite to six feet long hanging from the roof of the cavity, the being solid smithsonite.

No other species were reported from this pocket. At the time a number of specimens were saved before the cavity was stoped.

Ex David Hertstch Collection ( Sydney)

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
Earthstones Australia

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