tatanan
Wangun coal saka klempakan saka lebu tetanduran ing lingkungan rawa kang wis kakubur sedimen kayata lendhut utawa wedhi lan banjur compacted kanggo mbentuk coal.
watu gamping punika rock sedimentary kang utamané arupi kalsium karbonat.
isi Mineral
analcime, apatite, barite, kalsit, chalcopyrite, chlorite, chromite, clausthalite, mineral lempung, grup crandallite, dolomite, Feldspar, galena, gypsum, marcasite, muscovite utawa illite, pyrite, quartz, siderite, sphalerite, zirkon
kalsit, chert, lempung, dolomite, quartz, wedhi, silt
senyawa isi
karbon, hidrogen, nitrogen, oksigen, belerang
aluminium oxide, NaCl, cao, wesi (iii) oxide, feo, MgO