TY - RPRT TI - Analytical results and sample locality map of heavy-mineral-concentrate samples from the Charlotte 1° x 2° quadrangle, North Carolina and South Carolina AU - D. F. Siems AU - W. R. Griffitts AU - K.A. Duttweiler AU - J. D. Hoffman PY - 1986 DO - 10.3133/ofr86472 UR - https://pubs.usgs.gov/publication/ofr86472 ID - ofr86472 ER -