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spherulitic iron

См. также в других словарях:

  • Ductile iron — Iron alloy phases Ferrite (α iron, δ iron) Austenite (γ iron) Pearlite (88% ferrite, 12% cementite) …   Wikipedia

  • Tachylite — (also spelled tachylyte) is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. It is a basic type of igneous rock that is decomposable by acids and readily fusible. The color is a… …   Wikipedia

  • igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …   Universalium

  • Rock microstructure — includes the texture of a rock and the small scale rock structures. The words texture and microstructure are interchangeable, with the latter preferred in modern geological literature. However, texture is still acceptable because it is a useful… …   Wikipedia

  • Changbaiite — General Category Oxide minerals Chemical formula PbNb2O6 Strunz classification 04.DF.10 …   Wikipedia

  • Rhyolite — This page is about a volcanic rock. For the ghost town see Rhyolite, Nevada, and for the satellite system, see Rhyolite/Aquacade. Rhyolite is an igneous, volcanic (extrusive) rock, of felsic (silicon rich) composition (typically >69% SiO2 mdash;… …   Wikipedia

  • Smithsonite — A specimen of smithsonite from Kelly mine, Socorro County, New Mexico, USA . General Category Carbonate mineral …   Wikipedia

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