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The Black Cloud Mine was one of the most famous specimen producing locales in Leadville and was one of the last operating mines in Colorado when it closed in 1999
which he referred to as "Windy Ridge"
This material is rarely seen in today's market and this particular specimen is at least 35 years old
striated cavities where the once preexisting Anhydrite once grew
prismatic crystal of Vivianite which is associated with beautifully contrasting golden Childrenite aggregates
Copper ("Spinel"-twins and crystals) Zircon The Black Cloud Mine wasA fantastic toenail sized display specimen of fine crystallized and "Spinel" twinned Copper from this wonderful discovery in Australia. This undamaged, showy, doubly terminated "floater" shows a marvelous combination of sharp, well defined, euhedral crystals of Native Copper along with elongated, striated "Spinel" twins. The piece is highlighted at the top by a wonderful dodecahedral crystal of Copper with both smooth well formed positive faces and
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