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anthracite / anthrazit

http://resource.geosciml.org/classifier/cgi/lithology/anthracite_coal

alt label
High rank coal more like this
definition Coal that has vitrinite mean random reflectance greater than 2.0% (determined in conformance with ISO 7404-5). Less than 12-14 percent volatiles (dry, ash free), greater than 91 percent fixed carbon (dry, ash free basis). The highest rank coal; very hard, glossy, black, with semimetallic luster, semi conchoidal fracture. more like this
source Economic commission for Europe, committee on Sustainable Energy- United Nations (ECE-UN), 1998, International Classification of in-Seam Coals: Energy 19, 41 pp; see also Neuendorf et al. 2005; http://en.wikipedia.org/wiki/Coal#Types_of_coal; Eberhard Lindner; Chemie für Ingenieure; Lindner Verlag Karlsruhe, S. 258 more like this
type
Resource original
Concept original
broader
http://resource.geosciml.org/classifier/cgi/lithology/coal original
narrower anthracite_coal original
in scheme simplelithology original
is primary topic of anthracite_coal