Publications by Zapp, Alfred
Title | Publication Year Sort ascending | Abstract | Author | Series | Publisher | |
---|---|---|---|---|---|---|
![]() |
Barite in northern Llano County | 1941 | This report gives the results of a study of barite deposits on the adjoining Freeman and Hillsmeier properties in northern Llano County, where a small tonnage of residual barite has been mined or "gophered" during recent years. |
Zapp, Alfred | Mineral Resource Survey Circulars |