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Mineral resources of the Turtle Mountains Wilderness Study Area, San Bernardino County, California

Bulletin 1713-B

By:
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Abstract

At the request of the U.S. Bureau of Land Management, approximately 105,200 acres of the Turtle Mountains Wilderness Study Area (CDCA-307) were evaluated for mineral resources (known) and resource potential (undiscovered). In this report, the area studied is referred to as "the wilderness study area" or simply "the study area"; any reference to the Turtle Mountain Wilderness Study Area refers only to that part of the wilderness study area for which a mineral survey was requested by the U.S. Bureau of Land Management.

The wilderness study area is in southeastern San Bernardino County, Calif. Gold, silver, copper, and lead have been mined within and adjacent to the study area. Copper-zinc-silver-gold mineral occurrences are found in the southern part and gold-silver mineral occurrences are found in the northern part of the study area; identified low- to moderate-grade gold-silver resources occur adjacent to the study area along the western boundary. Six areas in the south-central and northwestern parts of the study area have high resource potential, two broad areas have moderate resource potential, and part of the southwest corner has low resource potential for lode gold, silver, and associated copper, lead, zinc, molybdenum, and tungsten. Alluvium locally within one of these areas has moderate resource potential for placer gold and silver, and the entire area has low resource potential for placer gold and silver. There is low resource potential for perlite, ornamental stone (onyx marble and opal), manganese, uranium and thorium, pegmatite minerals, and oil and gas within the study area. Sand and gravel are abundant but are readily available outside the wilderness study area.

Study Area

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Mineral resources of the Turtle Mountains Wilderness Study Area, San Bernardino County, California
Series title:
Bulletin
Series number:
1713
Chapter:
B
Year Published:
1988
Language:
English
Publisher:
U.S. Government Printing Office
Description:
Report: vi, 28 p.; Plate: 29.72 x 40.72 inches
Larger Work Title:
Mineral resources of Wilderness Study Areas: Eastern California Desert Conservation Area, California
Country:
United States
State:
California
County:
San Bernardino County
Other Geospatial:
Turtle Mountains Wilderness Study Area