| 3. | Jiangmen boasts of rich mineral resources with 37 kinds of minable minerals , including limestone , silica sand , potassium feldspar , monazite , crystal , aquamarine , coal , tombarthite / rare earth , gold , silver , copper , iron , stannum and tungsten , among others 矿产资源丰富,已探明可开采的有石灰石、硅砂、钾长石、独居石、水晶、绿柱石、煤、稀土及金、银、铜、铁、锡、钨等37种。 |