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Hidalgoite, a rare lead aluminium arsenate sulphate hydroxide, is one of the rarer secondary species seen at Tsumeb mine in Namibia. This specimen, despite being a miniature, is quite substantial for Hidalgoite from this famous locality. The Hidalgoite forms tiny glassy pale yellow microcrystals covering an area around 3 x 2.5 cm in extent on what appears to be Calcite with Malachite in association. It comes from an important old European-based systematic collection.
37 x 32 x 19 mm