A crystallized form of silica, occurring in small hexagonal tables, found in trachyte and other igneous rocks.
| 单词 | θ7002 |
| 释义 | the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > quartz > high temperature quartzes (2) tridymite1868 A crystallized form of silica, occurring in small hexagonal tables, found in trachyte and other igneous rocks. cristobalite1888 One of the three main forms of silica (the others being quartz and tridymite), formed at high temperatures as high-cristobalite and changing at lower… |
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