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Beyerite Bismutite & Malachite

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PJM127608

Beyerite Bismutite & Malachite

Description Tabs

Description
Locality: 
A Lone Hand Mine, Malbon, Cloncurry Shire, Queensland, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5.8 × 3.1 cm
Description

<p>Beyerite is a rare and unusual carbonate is bismuth-rich and forms a pastel green, porcelainous vein on massive quartz and is associated with darker green malachite. Bismutite occurs on this specimen as light green veinlets of earthy material without the porcelainous appearance of the beyerite</p>

Mineral Data
What's on the rock

Beyerite

Formula: 
Ca(BiO)2(CO3)2
Strunz: 
5.BE.35
Crystal System: 
Tetragonal Thin plates or compact earthy masses.
Hardness: 
2.0 - 3.0
Streak: 
white
Type Locality: 
Schneeberg District, Erzgebirge, Saxony, Germany

Bismutite

Formula: 
(BiO)2CO3
Strunz: 
5.BE.25
Crystal System: 
Tetragonal
Hardness: 
2.5 - 3.5
Streak: 
Grey
Type Locality: 
Arme Hilfe Mine, Ullersreuth, Hirschberg, Vogtland, Thuringia, Germany

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Earthstones Australia

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