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
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Latitude & Longitude (WGS84):
41° 3' 6'' North , 122° 26' 14'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lakehead | 461 (2011) | 17.0km |
| Dunsmuir | 1,582 (2017) | 22.2km |
| Coffee Creek | 217 (2011) | 23.1km |
| Trinity Center | 267 (2011) | 23.3km |
| Mount Shasta | 3,296 (2017) | 30.6km |
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 ElementsDetailed Mineral List:
| ⓘ 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.05 | Fe2+Cr3+2O4 |
| ⓘ | Magnesiochromite | 4.BB.05 | MgCr2O4 |
| Group 9 - Silicates | |||
| ⓘ | Uvarovite | 9.AD.25 | Ca3Cr2(SiO4)3 |
| ⓘ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| ⓘ | var. Chromium-bearing Clinochlore | 9.EC.55 | Mg5(Al,Cr)2Si3O10(OH)8 |
| Unclassified | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Pyroxene Group' | - | ADSi2O6 |
List of minerals for each chemical element
Other Databases
| Link to USGS MRDS: | 10238141 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Klamouth RangeVolcanic Arc
- Shoofly-Olds Ferry DomainDomain
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060890267
