Perkins Canyon prospect [2] (Prospects in Perkins Canyon), North Peak, Mount Diablo (Mt Diablo), Clayton, Contra Costa County, California, USAi

Regional Level Types
Perkins Canyon prospect [2] (Prospects in Perkins Canyon)	Prospect
North Peak	- not defined -
Mount Diablo (Mt Diablo)	Mountain
Clayton	City
Contra Costa County	County
California	State
USA	Country

A Hg occurrence/prospect located in the NW¼NW¼ sec. 33, T1N, R1E, MDM, 2.2 km (1.4 miles) ESE of North Peak (coordinates of record), in the vicinity of the mouth of Perkins Canyon. MRDS database stated accuracy for this location is 500 meters.

NOTE: The USGS MRDS database file presents geographic coordinates placing this locality in the W½SW¼ of section 33 despite the statement that it is located in the NW¼NW¼ of that section. The coordinates are believed to be in error since the mouth of Perkins Canyon is in the NW¼NW¼, not in the W½SW¼. The actual location in the NW¼NW¼ would be within the limits of the stated accuracy for the locality. MRDS file #10029554 also states that this/these prospects are located in the NW¼NW¼ of section 33 but the geographic coordinates presented in that file place the locality in the NE¼NE¼SW¼ of the section.

Mineralization is related to a breccia zone in rhyodacite cemented with calcite; crystalline cinnabar, metacinnabar, and pyrite are associated with the calcite. Local rocks include Lower Cretaceous marine rocks.

Workings include underground openings comprised of adits.

Other Databases

Link to USGS MRDS:	10029554

Other Regions, Features and Areas containing this locality

References