[Chemical composition] Since the mineral bornite often contain chalcopyrite, chalcocite microscopic inclusions whose composition varies widely. [crystal structure] equiaxed crystal system; [Formation] Single crystals are extremely rare, and are usually in the form of dense blocks or granular irregular aggregates (Fig. L-24). Figure L-24 Copper ore crystal aggregate [Physical properties] Fresh dark section was copper-red color, weathered surface often has a dark violet color mottled POH, hence the name; gray-black streak; metallic luster; opaque. No clerk. Hardness 3. The relative density is 4.9 to 5. Crisp. Conductive. [genesis and occurrence] The porphyrite can be formed in the secondary sulfide enrichment zone of the CuNi sulphide deposit, the skarn deposit and the copper sulphide deposit. Bornite susceptible to decomposition in a oxidizing atmosphere to form a table mineral malachite, azurite, cuprite, limonite ore. [Identification characteristics] The characteristic dark copper red and the non-fresh surface of the blue purple spotted ochre; low hardness. [Main use] is the main ore mineral of copper. 1. Portable and Lightweight: The ABS promotion counter round is designed to be lightweight and portable, making it easy to move and set up at different locations. Abs Promotion Counter Round,Half Round Counter,Promotion Round Table,Promotion Table Box SUZHOU JH DISPLAY&EXHIBITION EQUIPMENT CO.,LTD , https://www.jh-rollup.com
a 0 =1.093 nm, Z=8; its crystal structure is quite complicated.
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Bornite
Cu 5 FeS 4