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Santa Isabel Nyman Consolidated group (Nyman Consolidated group; Santa Ysabel Consolidated Mine; Knox and Boyle claim; Miller and Holmes claim; Nyman claim), Jamestown Mine (Jamestown group), Jamestown, Jamestown District, Tuolumne County, California, USAi
Regional Level Types
Santa Isabel Nyman Consolidated group (Nyman Consolidated group; Santa Ysabel Consolidated Mine; Knox and Boyle claim; Miller and Holmes claim; Nyman claim)- not defined -
Jamestown Mine (Jamestown group)Mine
Jamestown- not defined -
Jamestown District- not defined -
Tuolumne CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
37° 55' 10'' North , 120° 25' 1'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Jamestown3,433 (2011)3.8km
Chinese Camp126 (2011)5.6km
Sonora4,818 (2017)7.8km
East Sonora2,266 (2011)8.1km
Tuttletown668 (2011)8.8km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Calaveras Gem & Mineral SocietyAngels Camp, California20km
Mindat Locality ID:
98039
Long-form identifier:
mindat:1:2:98039:2
GUID (UUID V4):
2e821d52-7f6c-41c1-a3b7-ab3a7f364b2b


A former lode Au group of occurrence/claims/mine located in sec. 22, T1N, R14E, MDM, 0.4 km (1,200 feet) WNW of Stent and 3.8 km (2.4 miles) S of Jamestown (on the SE slope of Quartz Mountain), on private land. The property consists of 4 claims. MRDS database accuracy for this location is not stated. NOTE: This locality is closer to Stent than Jamestown; however, it is listed as Jamestown since it is a component of the Jamestown group.

Mineralization is a vein deposit hosted in schist and slate. The ore body strikes N16W and dips 65NE. A series of greenstone dikes accompany the vein defined by numerous stringers cutting the slate formation. The average thickness of the vein is 6 feet. The ore is from the quartz stringers and gouge seams. This location was especially known for its pocket deposits. Local rocks include Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains).

Workings include underground openings with an overall depth of 243.84 meters. There are 3 shafts: No. 1 is 830 feet deep in the hanging wall with 3 levels at 400, 600 & 800 feet. The No. 2 is 600 feet cutting the vein at 400 feet. The Knox and Boyle shaft is 800 feet. There are extensive crosscut and drifts from each shaft.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

2 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 5 - Nitrates and Carbonates
Dolomite5.AB.10CaMg(CO3)2

List of minerals for each chemical element

CCarbon
C DolomiteCaMg(CO3)2
OOxygen
O DolomiteCaMg(CO3)2
MgMagnesium
Mg DolomiteCaMg(CO3)2
CaCalcium
Ca DolomiteCaMg(CO3)2
AuGold
Au GoldAu

Other Databases

Link to USGS MRDS:10077900

Localities in this Region

  • California
    • Tuolumne County
      • Jamestown District
        • Jamestown
          • Jamestown Mine (Jamestown group)
            • Santa Isabel Nyman Consolidated group (Nyman Consolidated group; Santa Ysabel Consolidated Mine; Knox and Boyle claim; Miller and Holmes claim; Nyman claim)

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate
USA

This page 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

 
Mineral and/or Locality  
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