Coltan
Coltan is a dull black metallic ore from which the elements niobium and tantalum are extracted. The niobium-dominant mineral in coltan is columbite, and the tantalum-dominant mineral is the tantalite.
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An ironstone (76) is a sedimentary rock that contains more than 15% iron, which may be present as variable proportions of iron-bearing minerals such as goethite, siderite, and berthierine. Sedimentary ironstones may be hard and calcareous and contain quartz grains, ooliths, pebbles, and a wide variety of macrofossils. The Frodingham Ironstone bed comprises a lenticular …
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Copper is a chemical element with the symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color.
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Aluminium Alloy Plates • Aluminium Alloy Sheeting Exotic • Aluminium Alloy Sheeting Special • Aluminium Alloy Sheets Corrugated • Aluminium Alloys • Aluminium Alloys Foundry • Aluminium Angles • Aluminium Armour Plates • Aluminium Bars • Aluminium Bars Square • Aluminium Bronze • Aluminium Coiled Strips • Aluminium Conductor • Aluminium Edgings • Aluminium Electrical …
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Calcium carbide, also known as calcium acetylide, is a chemical compound with the chemical formula of CaC₂. Its main use industrially is in the production of acetylene and calcium cyanamide. Hazardous Wastes: Calcium carbide is a D003 reactive hazardous waste, since addition to water generates a regulated amount of flammable gas.
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Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. Allotropes: grey (most common), yellow, black … Atomic number (Z): 33 CAS Number: 7440-38-2 Natural occurrence: