00750cam a22002411 4500 gs 49000121 DLC 20260227111355.0 780815s1948 mtua 000 0 eng gs 49000121 (OCoLC)4143650 DLC TxEU DLC premarc TN948.P38 H4 Heinrich, E. William (Eberhardt William), 1918- Pegmatite mineral deposits in Montana. Butte, Montana School of Mines, 1948. vii, 56 p. illus., maps (1 fold.) 28 cm. Montana Bureau of Mines and Geology. Memoir no. 28 "References": p. 55-56. Mines and mineral resources Montana. Pegmatites. 28367 28367