〔12〕湖南省常宁县水口山是重要的铅锌矿产地。
Shuikoushan in Changning, Hunan Province, is well known for its lead mines.
常宁玉是产于湖南省常宁县的一种玉石新品种，属透辉石质玉。
Changning jade, a new member of jade family, occurs in Changning county, Hunan and mineralogically it consists of diopside, very fine in grain size, homogeneous in texture, bright and hard.
常宁玉是产于湖南省常宁县的一种玉石新品种，属透辉石质玉。
Changning jade, a new member of jade family, occurs in Changning county, Hunan and mineralogically it consists of diopside, very fine in grain size, homogeneous in texture, bright and hard.
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