Any naturally occurring mineral substance which is clear and transparent like ice; esp. a form of quartz (= rock crystal, n. 1). Often in…
单词 | θ7001 |
释义 | the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > quartz (143) crystalOE Any naturally occurring mineral substance which is clear and transparent like ice; esp. a form of quartz (= rock crystal, n. 1). Often in… quartz1676 A common rock-forming mineral consisting of silica, SiO2, which occurs as colourless or white hexagonal prisms or as polycrystalline masses, and… spar-stone1694 A stone or rock having a crystalline appearance; quartz, spar. Subcategories:— high temperature quartzes (2) — crystalline quartzes (30) — cryptocrystalline quartz (62) — amorphous quartz or opal (33) — basanite (3) — other quartzes (10) |
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