dioptase

常见例句

• Specimen of Wulfenite is very common. However, Wulfenite ON Dioptase is quite uncommon. It is only discovered at Tsumeb, Namibia, with limited quanities.
  钼铅矿是一种相当受欢迎的矿物;但;长在透视石上的钼铅矿就相当稀少;只在西南非的纳米比亚发现过一次;且数量相当有限.;透视石又称为"翠铜矿"
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