TY - RPRT TI - Magnetic susceptibility and triangular exchange coupling in the tourmaline mineral group AU - T. Tsang AU - A. N. Thorpe AU - G. Donnay AU - Frank E. Senftle PY - 1971 DO - 10.1016/s0022-3697(71)80039-2 UR - https://pubs.usgs.gov/publication/70227467 ID - 70227467 ER -