Hemet Magnesite Mine (Hemet Magnesite property), Winchester, Menifee Mining District (Auld Mining District), Riverside County, California, USAi
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Latitude & Longitude (WGS84):
33° 41' 45'' North , 117° 1' 39'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Winchester | 2,534 (2014) | 5.4km |
| Green Acres | 1,805 (2011) | 6.5km |
| Hemet | 83,861 (2017) | 7.7km |
| Homeland | 5,969 (2011) | 9.2km |
| East Hemet | 17,418 (2011) | 9.6km |
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 |
|---|---|---|
| Yucaipa Valley Gem & Mineral Society | Yucaipa, California | 38km |
| Fallbrook Gem and Mineral Society, Inc. | Fallbrook, California | 41km |
| Shadow Mountain Gem & Mineral Society | Palm Springs, California | 47km |
Mindat Locality ID:
209123
Long-form identifier:
mindat:1:2:209123:8
GUID (UUID V4):
39628e2b-fae6-464b-92ad-a8e51ecd93dd
A magnesite-pegmatite occurrence/mine located in the NWΒΌ sec. 31, T5S, R1W, SBM, 5.4 km (3.3 miles) ESE of Winchester and 7.8 km (4.8 miles) SW of Hemet, on private (patented) land. MRDS database stated accuracy for this location is 500 meters.
NOTE: USGS MRDS database file #10064424 presents geographic coordinates (33.69643, -116.92169) that place this locality in the wrong sec. 31 (T5S, R1E).
Mineralization is a vein magnesite deposit and pegmatite hosted in serpentinite. The deposit occurs in a stockwork of veins in a belt of serpentinite 200 to 400 feet wide intrusive into micaceous gneiss and schist. Associated rocks include schist and gneiss. Local rocks include Mesozoic granitic rocks , unit 2 (Peninsular Ranges) and/or Jurassic marine rocks, unit 4 (Peninsular Ranges and Western Transverse Ranges).
Workings include surface openings with a length of 76.2 meters, an overall depth of 73.15 meters and overall width of 21.34 meters.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
6 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| β Andalusite Formula: Al2(SiO4)O |
| β Antigorite Formula: Mg3(Si2O5)(OH)4 |
| β Cordierite Formula: (Mg,Fe)2Al3(AlSi5O18) Description: Occurs as small grains in pegmatite with Andalusite. |
| β Corundum Formula: Al2O3 Colour: Blue Description: Occurs as crystals to Β½ in. (225 cm) long with Andalusite. References: |
| β Dumortierite Formula: Al(Al2O)(Al2O)2(SiO4)3(BO3) Colour: Blue Description: Occurs as minute needles in Andalusite pegmatite. |
| β Magnesite Formula: MgCO3 Description: Occurs as a large deposit. References: |
| β 'Monazite' Formula: REE(PO4) Description: Occurs in pegmatite. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| β | Corundum | 4.CB.05 | Al2O3 |
| Group 5 - Nitrates and Carbonates | |||
| β | Magnesite | 5.AB.05 | MgCO3 |
| Group 9 - Silicates | |||
| β | Andalusite | 9.AF.10 | Al2(SiO4)O |
| β | Dumortierite | 9.AJ.10 | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| β | Cordierite | 9.CJ.10 | (Mg,Fe)2Al3(AlSi5O18) |
| β | Antigorite | 9.ED.15 | Mg3(Si2O5)(OH)4 |
| Unclassified | |||
| β | 'Monazite' | - | REE(PO4) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Antigorite | Mg3(Si2O5)(OH)4 |
| B | Boron | |
| B | β Dumortierite | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| C | Carbon | |
| C | β Magnesite | MgCO3 |
| O | Oxygen | |
| O | β Andalusite | Al2(SiO4)O |
| O | β Antigorite | Mg3(Si2O5)(OH)4 |
| O | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| O | β Corundum | Al2O3 |
| O | β Dumortierite | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| O | β Magnesite | MgCO3 |
| O | β Monazite | REE(PO4) |
| Mg | Magnesium | |
| Mg | β Antigorite | Mg3(Si2O5)(OH)4 |
| Mg | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Mg | β Magnesite | MgCO3 |
| Al | Aluminium | |
| Al | β Andalusite | Al2(SiO4)O |
| Al | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Al | β Corundum | Al2O3 |
| Al | β Dumortierite | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| Si | Silicon | |
| Si | β Andalusite | Al2(SiO4)O |
| Si | β Antigorite | Mg3(Si2O5)(OH)4 |
| Si | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| Si | β Dumortierite | Al(Al2O)(Al2O)2(SiO4)3(BO3) |
| P | Phosphorus | |
| P | β Monazite | REE(PO4) |
| Fe | Iron | |
| Fe | β Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
Other Databases
| Link to USGS MRDS: | 10064424 |
|---|
Other Regions, Features and Areas containing this locality
North America Plate
Pacific PlateTectonic Plate
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References
