grained aluminium

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• Bauxite — is the most important aluminium ore. It consists largely of the minerals gibbsite Al(OH)3, boehmite γ AlO(OH), and diaspore α AlO(OH), together with the iron oxides goethite and hematite, the clay mineral kaolinite and small amounts of anatase… …   Wikipedia

• Smoke screen — For the Transformers character, see Smokescreen (Transformers) A smoke screen is a release of smoke in order to mask the movement or location of military units such as infantry, tanks, aircraft or ships.It is most commonly deployed in a canister …   Wikipedia

• Smoke composition — A smoke composition is a pyrotechnic composition designed primarily to generate smoke. Smoke compositions are used as obscurants or for generation of signalling smokes. Some are used as a payload of smoke bombs and smoke grenades.ObscurantsSmoke… …   Wikipedia

• Geology of Taiwan — Taiwan is active geologically, showing plate boundary tectonics. The island formed at the junction of the Luzon Volcanic Arc (吕宋岛火山弧) and the Ryukyu Volcanic Arc (琉球火山弧). Subduction changes direction at Taiwan. South of the island, the Philippine …   Wikipedia

• Casting (metalworking) — Casting iron in a sand mold In metalworking, casting involves pouring liquid metal into a mold, which contains a hollow cavity of the desired shape, and then allowing it to cool and solidify. The solidified part is also known as a casting, which… …   Wikipedia

• Igneous rock — Geologic provinces of the world (USGS)   Shield …   Wikipedia

• Anorthosite — (pronEng|æˈnɔrθəsaɪt/, /ə ) is a phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar (90–100%), and a minimal mafic component (0–10%). Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most… …   Wikipedia

• Glossary of geology terms — Here is a glossary of Geological terms.A*Abyssal plain Flat or very gently sloping areas of the deep ocean basin floor. *Absolute dating the process of determining a specific date (in years or some other unit of time) for an archaeological,… …   Wikipedia

• Clay minerals — Oxford Clay (Jurassic) exposed near Weymouth, England. Clay minerals are hydrous aluminium phyllosilicates, sometimes with variable amounts of iron, magnesium, alkali metals, alkaline earths, and other cations. Clays have structures similar to… …   Wikipedia

• Orissa — Odisha Odia   State   Seal …   Wikipedia

• Iron ore — Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in colour from dark grey, bright yellow, deep purple, to rusty red. The iron itself is usually found in the …   Wikipedia