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Hemimorphite in Siderite specimens from Machen, Caerphilly, Wales, the abundance of hemimorphite naturally varies in these specimens and it occurs as veins punctuating the siderite groundmass or encrusted onto the siderate surface.
Hemimorphite in Siderite specimens from Machen, Caerphilly, Wales. Hemimorphite is an important ore of zinc containing up to 54.2% of the metal. Typically it forms crystalline crusts or layers and the crystals have one blunt end and one sharp end. The abundance of hemimorphite naturally varies in these specimens and it occurs in veins which punctuate the siderite groundmass or it is encrusted onto the siderite surface. Siderite is an iron carbonate mineral and is very valuable due to its purity, containing up to 48% iron. These specimens are supplied in a white card tray with an information label.
Weight | 150 g |
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