18.Zhaocun bentonite deposit oringnated from tuff rich in volcanic hyalocrystalline,which underwent hydrolysis and alteration in Changxing county,Zhejiang province.The deposit has middle scale.
19.Three forces are combining with deadly effect on the Indian Ocean island, which is incalculably rich in wildlife but impoverished in basic infrastructure.
20.The Sanjiang area is rich in resources of gem jade stones, such as anumarine, tourmaline, topaz, rock cristal, almandine, rose quartz, white marble, etc.