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单词 ore deposit
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ore deposit
ore deposit n.
ΚΠ
1855 F. Overman Treat. Metall. 21 In following the indications of an ore deposit, we are always to distinguish between heavy and light ores.
1958 F. E. Zeuner Dating Past (ed. 4) 335 The pitchblends on which the relevant age estimate is based come from ore-deposits of the Laramide orogenic phase.
1990 T. B. Colman Explor. for Metalliferous & Related Minerals (BNC) 6 The Gairloch discovery..was the first significant ore deposit to be found in the Lewisian of the North-west Foreland.
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