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Azurite Beudantite and Malachite

#PD34834

Azurite Beudantite and Malachite

#PD34834
Availability
Sold
Size
6 x 3.5 x 1 cm - Sm Cabinet 
Formula
Cu3(CO3)2(OH)2 (RRUFF)
Locality
Tsumeb mine, Tsumeb, Namibia
Tagged
carbonate , copper

A spectacular combination specimen of Thick tabular Azurite partially pseudomorphed by Malachite. The blue color of the Azurite is stunning, especially in person. Along the edges the blue color takes on a certain vividness and seems to penetrate from the subsurface. This must be the same "internal blue reflections of electric blue color" that Georg Gebhard described in his book "Tsumeb II" on page 304.  Although the crystal looks partial it is actually a floater and rehealed with Calcite and coated with excellent pseudoctahedral light brown Beudantite crystals to 1mm.

Azurite

Formula
Cu3(CO3)2(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Tabular, Prismatic, Stalactitic 
Cleavage
Perfect, Fair, None 
Luster
Vitreous (Glassy) 
Color
azure blue, blue, light blue, dark blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Azurite
On Dakota Matrix
Other Available Azurite
WebMineral
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Mindat
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