elkerite

== English == === Noun === elkerite (plural elkerites) (mineralogy) A subgroup of pyrobitumens rich in oxygen and partly soluble in alkali, resembling an earthy brown coal and probably representing a product of intense weathering of bitumens. ==== References ==== United States Bureau of Mines, Dictionary of Mining, Mineral, and Related Terms (1996). === Anagrams === treelike