另一较大的标本是这个给人深刻印象的铜明矾--蓝铜矿上边覆盖一层浅蓝色。

Another larger piece was this impressive chalcoalumite from bisbee-the light blue coating on azurite.

youdao

另一较大的标本是这个给人深刻印象的铜明矾--蓝铜矿上边覆盖一层浅蓝色。

Another larger piece was this impressive chalcoalumite from bisbee-the light blue coating on azurite.

youdao