Bureau of Economic Geology

Iron Ore in the Llano Region, Central Texas

Abstract
The magnetic iron-ore prospects of the Llano region of central Texas were investigated in a program which combined dip-needle and gravity-meter surveys by the Bureau of Economic Geology of The University of Texas and the U.S. Geological Survey with exploration by the U.S. Bureau of Mines. Magnetic observations were made on the Iron Mountain, the Bader, the Gamble, and the Olive mine prospects. Gravity observations were made over the first three areas, which subsequently were drilled. Approximately 65,000 long tons of ore is indicated for the Iron Mountain deposit. The investigations indicate the applicability of combined dip-needle and gravity-meter surveys in search of magnetic iron-ore deposits.
Authors
John T. Lonsdale
Citation

Barnes, V. E., Goldich, S. S., and Romberg, F., 1949, Iron Ore in the Llano Region, Central Texas: The University of Texas at Austin, Bureau of Economic Geology, Report of Investigations No. 5, 50 p

Code
RI005
ISSN
2475-367X
Number
5
Number of figures
9
Number of pages
50
Number of plates
8
Publisher
The University of Texas at Austin, Bureau of Economic Geology
Series
Report of Investigation
Year
1949