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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
dycrasite
Mining; General mining
正交礦物、 Ag 3 某人 ；金屬銀色-白色，常用玷污 ；sp gr，9.74 ；在靜脈與方鉛礦，本機的銀，和銀 sulfosalts ；銀礦石。
flagstaffite
Mining; General mining
正交礦產，C 10 H 22 O 3 、 獨聯體萜水合物;形式無色透明晶體中化石鬆樹原木附近的三藩市山峰，北部弗拉格斯塔夫，az。
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