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Geological Survey Bulletin 1286
Gold Veins Near Great Falls, Maryland |
TABLE OF CONTENTS
Gold-bearing veins and shear zones
Outlook for further development
ILLUSTRATIONS
PLATE
1. Map of underground workings2. Map of the vein system near Great Falls showing location of principal mine
FIGURE
1. Map showing gold mines in Montgomery County, Md., and location of area studied2. Aerial photograph showing prospect pits and trenches near the Ford mine
3. Graph showing production of gold in Maryland from 1868 to 1951
4. Isometric block diagram of the Maryland mine
5. Photographs of ruins of assay laboratory and mill
6. Equal-area projections of structures in wallrocks and in gold-bearing veins and shear zones
7. Photographs of gold in quartz and in limonite pseudomorphs after pyrite
8. Photographs of gold associated with galena
A discussion of the history of prospecting and mining in the Great Falls area and a description of the gold-bearing quartz veins.
UNITED STATES DEPARTMENT OF THE INTERIOR
WALTER J. HICKEL, Secretary
GEOLOGICAL SURVEY
William T. Pecora, Director
Library of Congres catalog-card No. 73-603796.
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Last Updated: 28-Mar-2006