Hirz Mountain Mine (Jennings group), Hirz Mountain, East Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USAi
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Latitude & Longitude (WGS84):
40° 54' 9'' North , 122° 14' 33'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lakehead | 461 (2011) | 11.5km |
| Mountain Gate | 943 (2011) | 22.0km |
| Shasta Lake | 10,159 (2017) | 26.9km |
| Central Valley (historical) | 4,340 (2015) | 26.9km |
| Montgomery Creek | 163 (2011) | 27.6km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Shasta Gem & Mineral Society | Redding, California | 37km |
Mindat Locality ID:
92671
Long-form identifier:
mindat:1:2:92671:0
GUID (UUID V4):
0113dc3c-011c-4859-8461-097715cd05e7
A former Fe-Cu occurrence/prospect located in secs. 7 & 8, T35N, R3W, MDM, on the NE slope of Hirz Mountain (coordinates of record), W of the McCloud River. The property consists of 11 claims. Owned by the Southern Pacific Land Co. MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is hosted in limestone. Associated rocks include andesite and basalt. The ore body is lenticular in shape at 6.1 meters wide and 15.24 meters long. Local rocks include Carboniferous marine rocks, unit 4 (Eastern Klamath Mountains) and/or Mesozoic granitic rocks, unit 6 (Eastern Klamath Mountains).
Local geologic structures include a fault trending N-NE separating the Nosoni Formation from the McCloud Limestone.
The property is underlain by the McCloud Limestone and tuffaceous sediments and basaltic and andesite flows of the Nosoni Formation. The two units are separated by a fault and an irregularly shaped intrusive mafic quartz-diorite. The Nosoni metasediments generally dip 30 to 60 NE. One exposure of limestone dips 35SE.
Workings include surface and underground openings, comprised of short adits and open cuts. In 1903 a number of open cuts and short adits were dug on the 11 claims. The USGS conducted a magnetometer survey of an area near sec. 5, 6, 7, & 8. There were some bulldozer cuts.
Ore was reported low in P and S.
A second magnetometer survey in 1961 or 1962 revealed a third area of potential ore, west of the open pit. Assays from three areas averaged 0.001%S, slightly more P2O5 and 0.02% TiO2. Estimations ranged from 260,000 tons per 100 feet to a "few" hundred thousand tons.
Production data are found in: Lydon & O'Brien (1974).
Assay analysis results: 1961: ^60% Fe.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Chalcopyrite Formula: CuFeS2 |
| β Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| β 'Garnet Group' Formula: X3Z2(SiO4)3 |
| β Hematite Formula: Fe2O3 |
| β 'Limonite' |
| β Magnetite Formula: Fe2+Fe3+2O4 Description: Outcrops. A small deposit. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| β | Hematite | 4.CB.05 | Fe2O3 |
| Group 9 - Silicates | |||
| β | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Unclassified | |||
| β | 'Limonite' | - | |
| β | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | Oxygen | |
| O | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | β Hematite | Fe2O3 |
| O | β Magnetite | Fe2+Fe23+O4 |
| O | β Garnet Group | X3Z2(SiO4)3 |
| Al | Aluminium | |
| Al | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | β Garnet Group | X3Z2(SiO4)3 |
| S | Sulfur | |
| S | β Chalcopyrite | CuFeS2 |
| Ca | Calcium | |
| Ca | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | Iron | |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | β Hematite | Fe2O3 |
| Fe | β Magnetite | Fe2+Fe23+O4 |
| Cu | Copper | |
| Cu | β Chalcopyrite | CuFeS2 |
Other Regions, Features and Areas containing this locality
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060890077
