CalciteA beautiful crystallized mound of off white color, translucent, modified rhombohedra of Calcite from the world famous Sherman Mine in Leadville. This locality is arguably the most productive specimen producer in Leadville, despite the fact that over 10 million ounces of Silver came out in a period lasting around 11 years (started 1968 1970 and reopened 1975 1982). The Leadville mining district was the most productive silver mining region in Colorado.

One of the most exciting and yet incredibly limited discoveries for Bolivian minerals

but not often available on the market

“sword”-shaped crystal with a beautiful termination with Siderite on Pyrite matrix

crystal with a beautiful termination with minor golden Siderite and matrix

Specimen # BOL711B247

If you have ever seen Petalites from various localities in Brazil or Afghanistan

In the early 1980's

I believe it’s at least 50 years old and could date back further

Perhaps the most interesting aspect of the piece is the fact that one side has near full coverage of Rhodochrosite

"sword"-shaped crystal of Vivianite with/on metamorphosed Sandstone matrix

Keep in mind that this is one of the rarest sulfosalts in the world

A beautiful crystal group of very sharp