TY - RPRT TI - Map showing areas of detrital fluorite and cassiterite, and the localities of rock samples, Hillsboro and San Lorenzo quadrangles, exclusive of the Black Range Primitive Area, Sierra and Grant Counties, New Mexico AU - K. C. Watts AU - H. V. Alminas AU - V. E. Kraxberger PY - 1978 DO - 10.3133/mf900h UR - https://pubs.usgs.gov/publication/mf900H ID - mf900H ER -