TY - RPRT TI - Mineralogy, geochemistry, metamorphism, and provenance of the early Proterozoic metamorphic rocks of the central Front Range, Colorado AU - D. J. Gable PY - 1996 DO - 10.3133/ofr96522 UR - https://pubs.usgs.gov/publication/ofr96522 ID - ofr96522 ER -