quartz grain
1quartz — quartzose /kwawrt sohs/, quartzous /kwawrt seuhs/, adj. /kwawrts/, n. one of the commonest minerals, silicon dioxide, SiO2, having many varieties that differ in color, luster, etc., and occurring either in masses (as agate, bloodstone, chalcedony …
2quartz porphyrite — A porphyrite carrying quartz as an accessory constituent; the representative in the medium grain size group of the fine grained dacite …
3Dynamic quartz recrystallization — Quartzite from Southern Appalachians. Thin section prepared by Michael Stevens. Quartz is the most abundant single mineral in the earth s crust (behind the feldspar group),[1] and as such is present in a very large proportion of rocks both as… …
4Meule à grain — Meule à grains Objet fondamental, hautement symbolique du lieu où elle travaille, la meule usagée adossée le long d un mur, signale la qualité de l usine à laquelle elle appartient Une meule à grains est un objet technique, traditionnellement en… …
5Continuous sub-grain rotation type dynamic recrystallization — In Metallurgy, Materials Science and Structural geology continuous sub grain rotation type dynamic recrystallization is recognized as an important mechanism for dynamic recrystallisation. It involves the rotation of initially low angle sub grain… …
6sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …
7кварцевая крупка — Ндп. шихта концентрат кварцевая шихта Конечный продукт обогащения кварца, фракционированный по классам крупности. [ГОСТ 16548 80] Недопустимые, нерекомендуемые кварцевая шихтаконцентратшихта Тематики оптика, оптические приборы и измерения EN… …
8легированная кварцевая крупка — Кварцевая крупка с введенными легирующими добавками. [ГОСТ 16548 80] Тематики оптика, оптические приборы и измерения EN doped quartz grain DE legierter Quarzgriess FR grains dopés en quartz …
9Ooid — Modern ooids from a beach on Joulter s Cay, The Bahamas. Ooids on the surface of a li …
10igneous 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 …
