Distribution of chlorine in terrestrial rocks

Details Distribution of chlorine in terrestrial rocks Distribution of chlorine in terrestrial rocks

Jan 1967

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967gecoa..31...35j&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 31, Issue 1, pp.35-49

Physics

1

Scientific paper

The available data on the relative abundance of chlorine in various types of terrestrial rocks is reviewed critically. The mean chlorine contents for igneous rocks are (in ppm Cl): ultramafic rocks, 100; mafic rocks, 160; intermediate rocks, 180; acidic rocks, 200; syenites, 430; and nepheline syenites, 2170. For sedimentary rocks the corresponding values are: shales and clays, 100; sandstones, 20; limestones, 130; and dolomites, 660; for metamorphic rocks, schists, 350; gneisses, 200; and amphibolites, 300. Both the paragenesis and crystal chemistry of mineral constituents affect the mode of distribution. The abundances of Cl in the earth's crust and upper mantle are also estimated to be 180 ppm Cl and 100 ppm respectively.

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