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Jenny Lind Mining District, Calaveras County, California, USAi
Regional Level Types
Jenny Lind Mining DistrictMining District
Calaveras CountyCounty
CaliforniaState
USACountry

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PhotosMapsSearch
02720740017272092356058.jpg
Jenny Lind dredge field

Jenny Lind dredge field, Jenny Lind, Jenny Lind Mining District, Calaveras County, California, USA
02720740017272092356058.jpg
Jenny Lind dredge field

Jenny Lind dredge field, Jenny Lind, Jenny Lind Mining District, Calaveras County, California, USA
02720740017272092356058.jpg
Jenny Lind dredge field

Jenny Lind dredge field, Jenny Lind, Jenny Lind Mining District, Calaveras County, California, USA
Latitude & Longitude (WGS84):
38° North , 120° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~54km
GRN:
N26W68
Type:
Mining District
Köppen climate type:
Csa : Hot-summer Mediterranean climate
Mindat Locality ID:
260338
Long-form identifier:
mindat:1:2:260338:7
GUID (UUID V4):
0


A placer Au mining district located between the towns of Jenny Lind and Milton in western Calaveras County. It extends west into eastern San Joaquin and northeastern Stanislaus Counties. The area was first worked during the gold rush, and later hydraulicked. There was dredging here from 1903 until about 1940 and also small-scale lode mining. The district has yielded more
than 100,000 ounces of gold.

Geology: The gold values are in river gravels and flood plane deposits in and adjacent to the Calaveras River. There are older terrace and shore gravels, some of which are overlain by hardpan. In places hydraulic mine tailings overlie the gravels. Dredging depths ranged from 20 to 40 feet, with the average nearer 20 feet. Recovered gold values ranged from $0.10 to $0.30 (period values) per cubic yard and hydraulic tailings were around $0.lO (period values) per cubic yard. There are a number of narrow gold-quartz veins in greenstone in the eastern portion of the district.

Dredging Operations: Butte Dredging Co.; Calaveras Gold Dredging Co. (1903-1916); El Oro Dredging Co.; Isabel Dredging Co. (1908-1925 ?); Milton Gold
Dredging Co. (1935- ??).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

8 valid minerals.

Detailed Mineral List:

ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Galena
Formula: PbS
ⓘ 'Iron-Platinum alloy'
Formula: (Pt,Fe)
Description: Occurs in small amounts; 56.5% ferroan platinum alloy, 30% Os-Ir and 4% Au.
ⓘ Native Gold
Formula: Au
Localities: Reported from at least 26 localities in this region.
ⓘ Native Platinum
Formula: Pt
Description: Occurs in small amounts; 56.5% ferroan platinum alloy, 30% Os-Ir and 4% Au.
ⓘ Native Silver
Formula: Ag
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 8 localities in this region.
ⓘ Sphalerite
Formula: ZnS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
ⓘNative Silver1.AA.05Ag
ⓘNative Platinum1.AF.10Pt
Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Unclassified
ⓘ'Iron-Platinum alloy'-(Pt,Fe)

Localities in this Region

USA
USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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

Turner, Henry Ward (1894), Geological atlas, Jackson (California) folio (Folio No. 11): 1-6.
Winston, W.B. (1910) Gold dredging in California. California Mining Bureau Bulletin 57: 207-208.
Tucker, W. Burling (1916), Amador, Calaveras, Tuolumne Counties: California Journal of Mines and Geology, California Mining Bureau. (Report 14): 14: 1-172; […(abstract): Geol. Zentralbl., Band 27: 396 (1922)]: 124-127.
Logan, C. A. (1919) Platinum and Allied Metals in California. Bulletin 85. California State Mining Bureaupp.32-33
Logan, Clarence August and Franke, H. (1936), Mines and Mineral Resources of Calaveras Co., ancient shore-line deposits: California Division of Mines, California Journal of Mines & Geology, California Division of Mines (Report 32): 32(3): 324-325.
Clark, William B., Lydon, Philip A. (1963) Mines and Mineral Resources of Calaveras County, California. County Report 2. California Division of Mines and Geology
(1970) Gold Districts of California. Bulletin 193. California Division of Mines & Geologyp.80
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