| 单词 | chalcocite |
| 释义 | chalcocite (once / 319441 pages) n WORD FAMILY chalcocite USAGE EXAMPLESAt Butte for instance, secondary chalcocite is clearly to be recognized. Leith, C. K. (Charles Kenneth), The Economic Aspect of Geology(2010) The present tendency at Butte is to consider as secondary chalcocite only certain sooty phases to be found in upper levels. Leith, C. K. (Charles Kenneth), The Economic Aspect of Geology(2010) The solid masses of chalcocite in the Kennecott copper mines seem hardly explainable as the result of secondary sulphide enrichment. Leith, C. K. (Charles Kenneth), The Economic Aspect of Geology(2010) n a heavy grey mineral that is an ore of copper Syn|Hyper copper glance mineral solid homogeneous inorganic substances occurring in nature having a definite chemical composition |
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