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Anomalous concentrations of several metals in iron-formation of the Blue Lead Mountain area, Pennington County, South Dakota

Circular 707

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Abstract

Geochemical sampling of bedrock has revealed anomalous copper, silver, molybdenum, gold, arsenic, mercury, zinc, and cobalt in meta-iron-formation in the Blue Lead Mountain area 5 miles (8 kilometres) north-northwest of Keystone, S. Dak. The anomalies are in complexly folded and faulted iron-formation. Metal content decreases sharply in the surrounding rocks. The extent and intensity of the anomalous areas, despite evidence that previous mining had little success, are sufficient to make this area an interesting target for exploration.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Anomalous concentrations of several metals in iron-formation of the Blue Lead Mountain area, Pennington County, South Dakota
Series title:
Circular
Series number:
707
Edition:
-
Year Published:
1975
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
iii, 14 p. :maps ;26 cm.