Author: Worl, Ronald G., Van Alstine, Ralph E., and Heyl, Allen V.
Title: Flourite in the United States, Exclusive of Hawaii, Mineral Investigations Resources Map MR-60
Publication: Washington, D. C. U. S. Geological Survey, 1974
Description: tan envelope, 13 pages of text, foldout map. very good.
Map Scale 1:3 168 000 DR4.
Seller ID: 5565564
Subject: Earth Science, Mining