Detailed Description

A sculptural specimen featuring two lines of bournonite crystals grown together and intersecting at the top. The bournonite crystals are sharp with good lustre and exhibit the classic “cogwheel” twinning. In excellent condition, no damage. A beauty!

About These Bolivian Bournonites

These bournonite crystals are from the Viboras Mine, Machacamarca District, Potosí, Bolivia. The locality has produced excellent bournonite specimens over the years, but the finds are have been sporadic, often years apart. The nature of the bournonite has varied from one find to the next, and some of the bournonite has been of modest lustre, sometimes dull, and of varying sharpness/definition. This latest find has produced sharp, lustrous bournonite crystals of the finest quality, exhibiting the classic “cogwheel” twinning.