dioptase

常見例句

• Specimen of Wulfenite is very common. However, Wulfenite ON Dioptase is quite uncommon. It is only discovered at Tsumeb, Namibia, with limited quanities.
  鉬鉛礦是一種相當(dāng)受歡迎的礦物;但;長在透視石上的鉬鉛礦就相當(dāng)稀少;只在西南非的納米比亞發(fā)現(xiàn)過一次;且數(shù)量相當(dāng)有限.;透視石又稱為"翠銅礦"
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