marble
Instance URI: http://resource.geosciml.org/classifier/cgi/commodity-code/marble
Within scheme: South Australian Commodity Codes
Commercial marble includes metamorphosed limestones and serpentine rocks, all of which are capable of taking a polish. An important member of this classification is serpentine marble, which is also known as verde antique, and comprises green-to-black serpentine, which is a hydrous magnesium silicate mineral that is crisscrossed by veins of lighter minerals, such as calcite or dolomite.