Its reserves of stone coal, alunite, pyrophyllite, limestone for cement-making and limestone for construction rank the first in the country; fluorite occupies the second place in China and diatomite, the third. The reserves of silica, pearlite, granite, zeolite, silver, zinc, vanadium and cadmium all rank among the countries' top tens. Zhejiang has a total coastline (including island lines) of 6,486 km; with a total domestic sea area of 30,900 sq km. Zhejiang is famed as "a treasure house of plants in southeastern China." with a high forest-coverage rate. The continental shelf rich in petroleum and natural gas resources has very good prospect for exploitation.