自然铂(native platinum)是常含有铁、铱、钯、铑等杂质的铂矿物。颜色为银白色至暗钢灰色,属于等轴晶系。晶体少见。常成不规则的粒状或鳞片状集合体。无解理,断口锯齿状,条痕光亮浅钢灰色。密度15~19,硬度4~4.5。富延展性,分原生矿和矿砂两种。用于提炼铂,同时也可得铱、钯、铑等。 自然铂主要产在基性和超基性的火成岩中,尤其是纯橄榄岩(Dunite)内较为常见。
主要矿物是自然铂矿、铁铂合金、钌铱锇矿、等轴锇铱矿和铱锇矿。
The trace element Rh exists mainly in native platinum, platinum-iron alloy and Pt-containing osmiridium.
南非自然资源总价值约20.3万亿兰特,国内已发现矿产60多种,铂族金属、金、萤石储量世界第一。
South Africa natural resources worth 20.3 trillion RAND, and 60 kinds of minerals have been found and the reserves of platinum group metals, gold and fluorite are the first of the world.
铱锇矿一种矿石,是少量铂、铑及其他金属矿石的铱锇的自然合金,用于制造针头和耐磨尖端。
A mineral that is a natural alloy of osmium and iridium with small inclusions of platinum, rhodium, and other metals, used in needles and wearing points.
应用推荐