lignite punika coal brownish alus kang nuduhake ngambah tetanduran lan ing antarané coal bituminous lan peat
amphibolite bisa ditegesake minangka rock metamorphic granular kang utamané kalebu hornblende lan plagioclase
rock grained coarse, rock grained nggoleki, medium rock grained, rock opaque
rock grained coarse, medium rock grained, rock opaque