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单词 θ6250
释义
the world > the earth > minerals > mineral sources > [noun] > material containing ore (14)
gangue1712

The unwanted or valueless part of a mineral deposit, surrounding or mixed with the ore; the matrix (matrix, n. 3a) in which a mineral occurs. Cf. vein

stuff1851

In various operative trades, applied spec. to the kind of material used in the trade. Mining. Material of rock, earth, or clay containing ore…

Subcategories:

— matrix (12)
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