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Home > Industry/Domain > Mining > Mineral mining
Mineral mining
The extraction of valuable minerals or other geological materials from the earth for economic interests.
Industry: Mining
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Mineral mining
黃玉
Mining; General mining
三斜晶系礦物、 基地 2 (F,OH) 2 SiO 4 ;偽正交晶系 ;無色到淡藍色,淺黃的到帶粉紅色米色 ("雪麗酒"黃玉色行動) ;定義硬度 8 的 Mohs 等級 ;在腔在花崗岩、 花崗、 和流紋岩,和周圍變質岩系 ;可能是寶石品質。 比較: 虛假黃玉 ;蘇格蘭威士卡黃玉 ;西班牙的黃玉。 ...
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