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The Siderites from this mine are not the typical blocky rhombic habit like those seen from a lot of other ore bodies in Colorado
textbook monoclinic prism shows the typical hazelnut brown color that is most commonly associated with this material
Do not miss out on this piece as few seem to have been found
True amber is older than copal with most ambers ranging from 10 to 30 million years old
Linarite caterpillar The Siderites from this mineLinarite is a well known lead copper sulfate, and the Grand Reef Mine is one of the classic localities for the species. Typically, Linarite is found as small to microscopic azure blue crystals, either tabular or elongated, in clusters or as crusts. This piece features a good sized, beautiful, lustrous, electric royal blue, crystal group of Linarite measuring a whopping 2. 1 cm on Quartz and host rock matrix. You don't see many Linarite crystals over 1
