haftliche Anzeiger, Klasse, Springer, Vienna, Austria. Osterreichische Periodico di Mineralogica, 19...Petrographische Mitteilungen, 1878-, Springer, Vienna, Austria. United States Bureau of Mines, Reports of Investigations...Geologic Occurrence feldspars are most common in upper amphiboand granulite facies rocks. K-feldspar lite...County, California; the Tintic district, Utah; and the Eureka district, Nevada. Vanadinite is a secondary...detrital minerals Africa dum; gemstones Lanka, Upper Burma, Rhodesia, Malagasy Re- (ruby and public |