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Hearst property, Dunsmuir, Siskiyou County, California, USAi
Regional Level Types
Hearst propertyProperty
Dunsmuir- not defined -
Siskiyou CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
41° 11' 14'' North , 122° 18' 35'' West
Latitude & Longitude (decimal):
41.18722,-122.30972
GeoHash:
G#: 9r342cbub
GRN:
N28W67
Type:
Property
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Dunsmuir1,582 (2017)3.9km
Mount Shasta3,296 (2017)13.7km
McCloud1,101 (2011)16.1km
Weed2,556 (2017)26.9km
Carrick131 (2011)29.3km
Mindat Locality ID:
92666
Long-form identifier:
mindat:1:2:92666:8
GUID (UUID V4):
0


A former Cr mine located in sec. 3, T38N, R4W, 3.9 km (2.4 miles) SW of Dunmuir and 3.1 km (1.9 miles) NNW of Castle Crag, along Little Castle Creek, on ridge top 1000 feet SW of Little Castle Creek Mine. MRDS database stated accuracy for this location is 1,000 meters.

NOTE: The MRDS file states that this locality is in Shasta County; however, the geographical setting data and other data within the file all indicate Siskiyou County. The coordinates provided plot to a point in Siskiyou County near the Shasta County line.

Mineralization is hosted in dunite. The ore body is podiform in shape. Chromite is found in a large tabular-shaped body of peridotite with an anticlinal structure that occurs in the NW corner of the county. Associated rocks include diorite. Local rocks include ultramafic rocks, chiefly Mesozoic, unit 1 (Trinity Ophiolite).

Production data are found in: Wells, F.G. and Hawkes (1965).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4

List of minerals for each chemical element

OOxygen
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ MagnetiteFe2+Fe23+O4
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ MagnetiteFe2+Fe23+O4

Other Databases

Link to USGS MRDS:10043446

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

(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060890
Wells, F.G. and Hawkes, H.E. (1965) Chromite deposits of Shasta, Tehama, Trinity and Humboldt counties, California. California Division Mines and Geology Bulletin 134, part 1, chapter 3: 150-151, 153.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
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