red-bed copper
red-bed copper Conformable copper deposits in sandstones laid down under terrestrial conditions, usually red in colour. The sands are usually porous and copper minerals, normally chalcocite, develop in the pores. Such deposits are found in many parts of the world, e.g. in the Permian of the Urals, and in the Triassic of central England, Nova Scotia, and the south-western USA.
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Red Panda , Ailurus fulgens Red ★★★ 1991 , red a colour at the end of the spectrum next to orange and opposite violet, as the colour of blood, fire, or rubies. As a liturgical colour, red is u… New Red Sandstone , New Red Sandstone Name given to the terrestrial red-bed deposits that overlie the Carboniferous. These deposits are of Permo-Triassic age. Cuprite , cuprite (red copper ore) Mineral, Cu2O; sp. gr. 5.8–6.1; hardness 3.5–4.0 cubic; red to nearly black; brownish-red streak; adamantine to sub-metallic… Cinnabar , cinnabar The commonest mercury mineral, HgS; sp. gr. 8.0–8.2; hardness 2.0–2.5; trigonal; scarlet-red to brownish-red; vermilion streak; adamantine l… Red Lead , red lead • n. a red form of lead oxide used as a pigment.
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red-bed copper