Cactus Flat Mine (Morongo Mine), Silver Peak [1], Blackhawk District (Silver Reef District), San Bernardino County, California, USAi

Regional Level Types
Cactus Flat Mine (Morongo Mine)	Mine
Silver Peak [1]	Peak
Blackhawk District (Silver Reef District)	Mining District
San Bernardino County	County
California	State
USA	Country

A Pb-Cu-Ag occurrence/prospect/mine located in sec. 19, T3N, R2E, SBM, 0.8 km (0.5 mile) SW of Silver Peak [1], on the northern margin of Cactus Flat, on National Forest land. MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is a vein deposit hosted in limestone. The vein material is mineralized with limonite, hematite and Cu oxides. A granite porphyry intrusive dike cuts limestone beds. The dike strikes N70W and dips 50S. Cu minerals occur in 12 to 18 inch (30 to 45 cm stringers, closely associated with 6 to 8 foot granite porphyry dikes. Associated rocks include granite. Local rocks include Carboniferous marine rocks, unit 1 (Western Mojave Desert) and/or Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).

Workings include underground openings comprised of a 50 foot adit driven E along stringers. 100 feet W of the adit as shaft was sunk to 75 feet in the porphyry dike. 600 feet in elevation below the upper workings, a 550 foot adit was driven N, and did not intersect the dike. W of this last adit is another 90 foot adit driven N50W along the granite-limestone contact. A winze was sunk 15 feet at a distance of 35 feet from the portal.

Other Databases

Link to USGS MRDS:	10034022

Other Regions, Features and Areas containing this locality

References