Rare-earth arsenates and other rare-earth minerals from the Black Range tin district

Abstract

New or rare minerals, including rare-earth element (REE) arsenates, oxides, and vanadates, have been identified from lithophysal cavities and veins with associated tin mineralization in the Black Range tin district (BRTD). These minerals occur in sparse to minute amounts but are distinctive because of their color, habit, and mineral association. Details of the mineralogy of the BRTD are given in Foord et al. (1988), in which additional pertinent references are listed.