TY - RPRT TI - Compositional variation in the chevkinite group: new data from igneous and metamorphic rocks AU - Harvey E. Belkin AU - R. MacDonald AU - F. Wall AU - B. Baginski PY - 2018 DO - 10.1180/minmag.2009.073.5.777 UR - https://pubs.usgs.gov/publication/70193855 ID - 70193855 ER -