单词 | cassiterite |
释义 | cassiterite (once / 96092 pages) n WORD FAMILY cassiterite USAGE EXAMPLESThe ore is cassiterite and this is usually found in volcanic rocks like granite. Forbes(Dec 19, 2014) It is also rich in resources - gold, diamonds, cassiterite and coltan, used in mobile phones. BBC(Jul 31, 2013) Miners take a break at the Mudere mine in the Democratic Republic of Congo where they dig for cassiterite, coltan and manganese. BBC(May 29, 2013) n a hard heavy dark mineral that is the chief source of tin Hyper mineral solid homogeneous inorganic substances occurring in nature having a definite chemical composition |
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