尖晶石
成分MgAl2O4，常含铁、铬、锰、锌等。与铁尖晶石形成类质同象系列。在结构式中，镁原子数大于铁原子数。当后者大于前者时，则称为铁尖晶石。等轴晶系。晶体常呈八面体及八面体与菱形十二面体聚形；常依(111)形成尖晶石律接触双晶。红、绿、褐、黑等色。玻璃光泽。硬度8。密度3.5～3.7克/厘米3。见于酸性侵入体与白云岩或白云质石灰岩的接触交代带中；也见于火成岩和变质岩中；在砂矿中也常出现。透明色美的尖晶石可作宝石。
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contributed at 2011-09-28
Classification(s)
●
Earth System(in Chinese) Mineralogy
Detailed Description
| English |
|---|
| Name | spinel |
| Chinese |
|---|
| Name | 尖晶石 |
| Description | 成分MgAl2O4，常含铁、铬、锰、锌等。与铁尖晶石形成类质同象系列。在结构式中，镁原子数大于铁原子数。当后者大于前者时，则称为铁尖晶石。等轴晶系。晶体常呈八面体及八面体与菱形十二面体聚形；常依(111)形成尖晶石律接触双晶。红、绿、褐、黑等色。玻璃光泽。硬度8。密度3.5～3.7克/厘米3。见于酸性侵入体与白云岩或白云质石灰岩的接触交代带中；也见于火成岩和变质岩中；在砂矿中也常出现。透明色美的尖晶石可作宝石。 |
How to Cite
NNU_Group (2011). 尖晶石, Concept & Semantic, OpenGMS,
https://geomodeling.njnu.edu.cn/repository/concept/a81232a4-0b18-44b5-9c17-52a0c5ed5b27
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