different between elkerite vs eakerite

English

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.

United States Bureau of Mines, Dictionary of Mining, Mineral, and Related Terms (1996).

This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.

? + -ite

eakerite

(mineralogy) A monoclinic-prismatic mineral containing aluminum, calcium, hydrogen, oxygen, silicon, and tin.

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