Dims: 7.63x6.48x2.98" (19.37x16.46x7.56cm)
Wt: 78.84oz (2235g)
Junction Shaft, Bisbee, Cochise County, Arizona, USA
An extremely beautiful siderite specimen, this cabinet piece consists of radial growths of small siderite crystals over a base that must have included thin sheets, much like barite has been known to form. I have seen some corals with a shape like this, flat branches with random blobs. The siderite layer is 3 to 6mm thick on both sides of those sheets, resulting in a mamilary pattern of brightly sparkling siderite crystals. Best, they have a bright and classic irridescence in colors of blue, purple, and red, with some hightlights of green and yellow. The bottom of the specimen has crystals that appear dull, and brown to gray in appearance. Some of the siderite crystals are several millimeters across, allowing inspection of their form, which is stacked sheets of rhombic flat crystals. In a few areas, the crystals are pale and translucent, but nearly all of them appear dark and opaque, likely due to a thin coating of the same weathering product that provides the collorful irridescence.