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“sword”-shaped crystal with a beautiful termination with Siderite on Pyrite matrix
This specimen is over 40 years old and was part of the best find of the material
similar to silica glass
Beryls in general
4 kilos (5
Calcite on Quartz Chlorargyrite “sword”-shaped crystal with a beautifulA most unusual Calcite specimen from the Idarado that clashes with the typical feathery Manganoan Calcites that we are used to seeing from this mine. Small groups of what I call popcorn Calcite are overgrowing a group of Milky Quartz crystals. Very different for the Idarado Mine, and certainly worth picking up if you are a collector of San Juan minerals. The Idarado Mine was one of the most productive San Juan localities and actually extended through
