Outlying occurences of galena, sphalerite, and fluorite in Illinois
By: James C. Bradbury
Contributors: Illinois State Geological Survey
Series: Illinois industrial minerals notes -- no. 7
Publisher: Illinois State Geological Survey
Published: 1957
Place of publication: Urbana, Ill
Language: eng
Subjects: Sphalerite; Galena; Fluorspar
Notes: Caption title.

"October 15, 1957."

Includes bibliographical references (leaf [1]).