Hawkins Mine (Hawkins Ranch), Messic Mountain, Stayton Mining District (McLeod Mining District; Panoche Mining District), San Benito County, California, USAi
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Latitude & Longitude (WGS84):
36° 56' 3'' North , 121° 16' 45'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Hollister | 37,462 (2017) | 14.2km |
| Ridgemark | 3,016 (2011) | 15.6km |
| Tres Pinos | 476 (2011) | 16.5km |
| San Juan Bautista | 1,961 (2017) | 25.0km |
| Gilroy | 53,231 (2017) | 26.9km |
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 |
|---|---|---|
| Salinas Valley Rock and Gem Club | Salinas, California | 44km |
A former Mn occurrence/mine located in sec. 35, T11S, R6E, MDM, 2.4 km (1.5 miles) SE of Messic Mountain (coordinates of record) and 4.0 km (2.5 miles) W of Antimony Peak (coordinates of record), along the E canyon wall of Arroyo de las Viboras. Discovered in 1916. Owned by T. S. Hawkins, California (1918). MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is hosted in Late Cretaceous chert of the Franciscan Formation. The ore occurs in bodies of intensely fractured and hydrothermally altered Franciscan chert and is associated with glaucophane schist. The chert is surrounded by sandstone and shale, that, on the contacts, have been altered to schist, glaucophane, chlorite and epidote. The ore is mainly secondary, porous, black oxide coatings, stringers and veinlets. A 1 foot (0.31 meter) vein of black oxide consists of lenticular masses, separated by calcite veins. Local rocks include Upper Cretaceous marine rocks, unit 1 (Upper Great Valley Sequence).
Workings include unspecified surface openings.
Analytical data results: Average grade of ore is 25 to 30% Mn.
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
4 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:
| ⓘ Bementite Formula: Mn7Si6O15(OH)8 Description: Occurs in manganiferous chert. References: |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ 'Chlorite Group' |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ Glaucophane Formula: ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| ⓘ 'Manganese Oxides' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 5 - Nitrates and Carbonates | |||
|---|---|---|---|
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Glaucophane | 9.DE.25 | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| ⓘ | Bementite | 9.EE.05 | Mn7Si6O15(OH)8 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Manganese Oxides' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Bementite | Mn7Si6O15(OH)8 |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Bementite | Mn7Si6O15(OH)8 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| Na | Sodium | |
| Na | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| Si | Silicon | |
| Si | ⓘ Bementite | Mn7Si6O15(OH)8 |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Mn | Manganese | |
| Mn | ⓘ Bementite | Mn7Si6O15(OH)8 |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Other Databases
| Link to USGS MRDS: | 10109381 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- California Coast RangesAccretionary Complex
- Franciscan DomainDomain
USA
- California
- Diablo RangeMountain Range
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