AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Bolivia > Bournonite (cogwheel twins)

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Online Mineral Museum Archive of Mineral Photographs and Mineral Descriptions from John Betts - Fine Minerals.com and Allminerals.com

   

Bournonite (cogwheel twins) from Machacamarca District, Cornelio Saavedra, Potosí, Bolivia

 
Bournonite (cogwheel twins) from Machacamarca District, Cornelio Saavedra, Potosí, Bolivia

Bournonite (cogwheel twins) from Machacamarca District, Cornelio Saavedra, Potosí, Bolivia

Bournonite (cogwheel twins) from Machacamarca District, Cornelio Saavedra, Potosí, Bolivia

DESCRIPTION:No. 90120
Mineral:Bournonite (cogwheel twins)
Locality:Machacamarca District, Cornelio Saavedra, Potosí, Bolivia
Description:Lustrous gray-metallic bournonite crystals, exhibiting classic cogwheel habit to 25 mm across, caused by fourling twins on the {110} plane.
Overall Size:4x3x2.5 cm
Crystals:10-25 mm
Archived: For reference only

 

 

 

 

 

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