Mindat Logo

Democrat group, Weaverville, Weaverville District, Klamath Mts, Trinity Co., California, USA

Latitude: 40°42'28"N
Longitude: 122°56'57"W
A former Au-Pb-As mine located in secs. 12 & 13, T33N, R10W, MDM, 2.7 km (8,800 feet) SSW of Weaverville, along Democrat Gulch (on the ridge between West Weaver Creek & Democrat Gulch), . MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is hosted in schist. The ore body is irregular, strikes N35E and dips 45NW at a thickness of 4.27 meters. The adit cuts sandstone, then a serpentinized dike, and then an andesitic dike. The last 50 feet is in a light green, chloritic schist with layers of graphitic schist. The serpentine dike is 73 feet thick, strikes N77.5W toward the main vein. Averill (1926) describes a decomposed "porphyry." Associated rocks include andesite. Local rocks include schist of various types and ages, unit 7 (Klamath Mountains) and/or Oligocene nonmarine rocks, unit 1 (Northern California).

Workings include surface and underground openings comprised of a 340 foot tunnel with a second tunnel on the opposite side of the ridge. Older workings include shallow holes and a winze.

No specific production record was found. Iron sulfides stated to have been very productive of gold on parts of surface and in placers nearby. Several bunches of rich Au ore from the serpentine dike stated to have totaled perhaps $5,000 to $10,000 (period values).

Analytical data results: Quartz stringers in graphitic schist said to carry approximately 8% arsenopyrite.

Mineral List

Arsenopyrite
'Chlorite Group'
Gold
Graphite
Quartz
'Serpentine Group'


6 entries listed. 4 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Logan, Clarence August (1926), El Dorado, Shasta and Trinity Counties: California Journal of Mines and Geology, California Mining Bureau. (Report 22): 22(2): 17-18.

Averill, Charles V. (1933), Gold deposits of the Redding-Weaverville quadrangles: California Journal of Mines and Geology, California Division Mines (Report 29): 29: 20-21.

Averill, Charles V. (1941), Mineral resources of Trinity County: California Journal of Mines and Geology, California Division Mines (Report 37): 37(1): 77.

McCulloch, W.C., Oesterling, W.A., Spurck, W.H., & Tischler, M.S. (1964), Minerals for Industry, Northern California, Southern Pacific Company: Vol. II: 130.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10035873 & 10207798.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0061050625.

This page is currently not sponsored. To sponsor this page click here.


Mineral and/or Locality  
Search Google  
Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: October 23, 2014 19:18:52 Page generated: August 10, 2012 17:26:20
Mineral and Locality Search
Mineral:
and/or Locality:
Options
Fade toolbar when not in focusFix toolbar to bottom of page
Hide Social Media Links
Slideshow frame delay seconds