Wangun coal saka klempakan saka lebu tetanduran ing lingkungan rawa kang wis kakubur sedimen kayata lendhut utawa wedhi lan banjur compacted kanggo mbentuk coal.
comendite jinis rock igneous kang kawangun amarga cooling lan solidification lahar utawa magma. bisa mbentuk karo utawa tanpa crystallization, salah siji ngisor permukaan minangka rocks intrusive utawa ing lumahing minangka rocks extrusive.
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
albite, amphibole, quartz
karbon, hidrogen, nitrogen, oksigen, belerang
al, fe, kalium oxide
metamorphism kakubur, metamorphism cataclastic, metamorphism regional
metamorphism cataclastic, metamorphism regional