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That is the third of 4 articles on the quarries of the traditional world and later, and, particularly, the marble that was quarried there and the artworks comprised of it. The primary (Mining in Historic Greece and Rome) was revealed … Continue reading
The Erzberg Mine is situated in the Austrian county of Styria. From a geological point of view, it belongs to the so-called greywacke zone, which represents a band of Palaeozoic metamorphosed sedimentary rocks intercalated between the Northern Limestone Alps and … Continue reading
The mineral, emerald, represents the green variety of the hexagonal silicate mineral beryl, which has the chemical formula Be3Al2Si6O18. Its colour may be interpreted as the result of the addition of vanadium and chromium ions into the crystal lattice. In … Continue reading