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Forest Queen Mine (Union Forest Queen Mine; Bull Dog Mine; North Star No. 1 Mine; Rattlesnake Mine; Black Bird Mine; Grey Eagle; Gray Eagle claim; Mammoth claim), Rattlesnake Hill, Klamath Mountains, Shasta County, California, USAi
Regional Level Types
Forest Queen Mine (Union Forest Queen Mine; Bull Dog Mine; North Star No. 1 Mine; Rattlesnake Mine; Black Bird Mine; Grey Eagle; Gray Eagle claim; Mammoth claim)Mine
Rattlesnake HillHill
Klamath MountainsMountain Range
Shasta CountyCounty
CaliforniaState
USACountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
41° 3' 6'' North , 122° 26' 14'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Lakehead461 (2011)17.0km
Dunsmuir1,582 (2017)22.2km
Coffee Creek217 (2011)23.1km
Trinity Center267 (2011)23.3km
Mount Shasta3,296 (2017)30.6km
Mindat Locality ID:
92607
Long-form identifier:
mindat:1:2:92607:5
GUID (UUID V4):
d0eb7179-bac8-45bf-995e-14f74f0bc719


A former Cr mine located in the NW¼ sec. 22, T37N, R5W, MDM, 3.0 km (9,900 feet) ESE of Rattlesnake Hill (coordinates of record) and S of the South Fork Shotgun Creek, on a located claim. Located on a steep, north-facing slope near the top of a NW-trending ridge along the S side of the South Fork Shotgun Creek. Owned by John L. Bones and Helen (100.0%), 1735 Riviera Dr., Redding, California 96001 (1976). Discovered 1895. Operated 1908-1954. MRDS database stated accuracy for this location is 10 meters.

Mineralization is a Cr deposit hosted in diorite and dunite. The ore body(ies) is irregular, disseminated, tabular and lenticular in form, strikes N40E and dips 45NW and/or 70W, at 1.22 and/or 25 meters wide and 10 meters thick, 100 meters long. Primary mode of origin was magmatic differentiation with primary ore control being lithology. There is slight wallrock alteration (carbonitization).

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

Workings include surface and underground openings. The underground openings totalled 72 meters in length. The mining method was open stope. Surface openings include several open pits, now partially filled with debris (1975). There are 2 inclines at 12 meters and 4 adits averaging 21 meters each. The adits are caved at the portals.

Production data are found in: California Division of Mines and Geology Bulletin 134, Part 1 Chapter 3: 144; Stinson (1975) CDMG.

Analytical data: Analyses of chromite shipped to the government G.S.A. stockpile, Grants Pass, Oregon in the period 1952-1957: 42.9% Cr2O3, Cr:Fe ratio 2.1:1 (13.8% Fe).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


3 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

Chromite
Formula: Fe2+Cr3+2O4
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Description: Common along fracture lines in the ore.
Clinochlore var. Chromium-bearing Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
Description: Common along fracture lines in the ore.
'Fayalite-Forsterite Series'
Magnesiochromite
Formula: MgCr2O4
'Pyroxene Group'
Formula: ADSi2O6
Uvarovite
Formula: Ca3Cr2(SiO4)3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Chromite ?4.BB.05Fe2+Cr3+2O4
Magnesiochromite4.BB.05MgCr2O4
Group 9 - Silicates
Uvarovite9.AD.25Ca3Cr2(SiO4)3
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
var. Chromium-bearing Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
Unclassified
'Fayalite-Forsterite Series'-
'Pyroxene Group'-ADSi2O6

List of minerals for each chemical element

HHydrogen
H ClinochloreMg5Al(AlSi3O10)(OH)8
H Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
OOxygen
O ChromiteFe2+Cr23+O4
O ClinochloreMg5Al(AlSi3O10)(OH)8
O Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
O MagnesiochromiteMgCr2O4
O UvaroviteCa3Cr2(SiO4)3
O Pyroxene GroupADSi2O6
MgMagnesium
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Mg MagnesiochromiteMgCr2O4
AlAluminium
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
SiSilicon
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Si UvaroviteCa3Cr2(SiO4)3
Si Pyroxene GroupADSi2O6
CaCalcium
Ca UvaroviteCa3Cr2(SiO4)3
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Cr MagnesiochromiteMgCr2O4
Cr UvaroviteCa3Cr2(SiO4)3
FeIron
Fe ChromiteFe2+Cr23+O4

Other Databases

Link to USGS MRDS:10238141

Other Regions, Features and Areas containing this locality

North America
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

 
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