Renierite

Renierite is a rare mineral which contains Germanium, and this specific specimen comes to us from Tsumeb, South West Africa, but Renierite occurs on nearly every continent, except for Antarctica and South America, and has been found in only one mine within Colorado, the Humboldt Mine in Boulder County. Renierite has a hardness of 4-5, a Specific Gravity of 4.4, and a metallic luster. Its Type Location is the Congo, and most Renierite either comes from Africa, or Russia. Renierite is named after Armand Marie Vincent Joseph Renier (1876-1951), the Director of the Geological Survey of Belgium, and possibly the one to discover and record this mineral? It’s an exceptionally beautiful metal rock, and an awesome sample of Germanium for element collectors!