Great Eastern and Mount Jackson Mine, Guerneville, Guerneville Mining District, Coast Range, Sonoma County, California, USAi
| Regional Level Types | |
|---|---|
| Great Eastern and Mount Jackson Mine | Mine (Abandoned) |
| Guerneville | - not defined - |
| Guerneville Mining District | Mining District |
| Coast Range | Mountain Range |
| Sonoma County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 32' 39'' North , 122° 58' 53'' West
Latitude & Longitude (decimal):
Type:
Mine (Abandoned) - last checked 2024
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Guerneville | 4,534 (2011) | 4.9km |
| Monte Rio | 1,152 (2011) | 9.1km |
| Cazadero | 354 (2011) | 9.1km |
| Forestville | 3,293 (2011) | 11.2km |
| Healdsburg | 11,742 (2017) | 12.2km |
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 |
|---|---|---|
| Santa Rosa Mineral And Gem Society, Inc. | Santa Rosa, California | 26km |
Other/historical names associated with this locality:
Sonoma Mine; Sonoma Quicksilver Mines; Guerneville Mine; Great Eastern Mine; Mount Jackson Mine; Mount Jackson Mercury Mine
A former Hg-Cr mine located in the NW¼NW sec. 16 & sec. 17, T8N, R10W, MDM, 0.5 km (1,600 feet) WSW of Guerneville. Name resulting from the consolidation of two pre-existing workings.
Located on the eastern side of Sweetwater Springs Road. and north of the village of Rio Nido.
Mineralization is hosted in rocks of the Franciscan Complex (serpentinite, sandstone, and sedimentary breccia) along a fault contact of narrow serpentine masses and Franciscan sandstone. The ore occurs as pipes and tabular bodies in coarse granular silica-carbonate rock that has altered from serpentine.
Local structures include faults, WNW-trending fault zone, N- and E-trending high angle faults, other fault sets striking NW and NE.
Related tectonic structure: Franciscan Melange.
Production data are found in: U.S. Bureau of Mines file data.
DIREXPL DMEA explored geologically favorable structures in 1956 and found significant amount of ore.
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
16 valid minerals.
Detailed Mineral List:
| ⓘ Ankerite Formula: Ca(Fe2+,Mg)(CO3)2 |
| ⓘ Baryte Formula: BaSO4 References: |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Cinnabar Formula: HgS Description: Occurs as crystals. References: |
| ⓘ Dolomite Formula: CaMg(CO3)2 References: |
| ⓘ Kaolinite Formula: Al2(Si2O5)(OH)4 |
| ⓘ Kaolinite var. Chrome-Kaolinite Formula: (Al,Cr)2(Si2O5)(OH)4 |
| ⓘ 'Limonite' |
| ⓘ Magnesiochromite Formula: MgCr2O4 Description: Occurs in Hg ores. |
| ⓘ Magnesite Formula: MgCO3 Description: Occurs as small crystals forming a crust with baryte and dolomite. References: |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Metacinnabar Formula: HgS Description: Small amounts reported. |
| ⓘ Millerite Formula: NiS Description: Occurs in minor amounts in Hg ores. |
| ⓘ Opal Formula: SiO2 · nH2O |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrite var. Bravoite Formula: (Fe,Ni)S2 Description: Occurs in minor amounts in Hg ores. |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
| ⓘ Vaesite Formula: NiS2 Description: Occurs in minor amounts in Hg ores. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Metacinnabar | 2.CB.05a | HgS |
| ⓘ | Millerite | 2.CC.20 | NiS |
| ⓘ | Cinnabar | 2.CD.15a | HgS |
| ⓘ | Pyrite var. Bravoite | 2.EB.05a | (Fe,Ni)S2 |
| ⓘ | 2.EB.05a | FeS2 | |
| ⓘ | Vaesite | 2.EB.05a | NiS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Magnesiochromite | 4.BB.05 | MgCr2O4 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | Opal | 4.DA.10 | SiO2 · nH2O |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Magnesite | 5.AB.05 | MgCO3 |
| ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| Group 9 - Silicates | |||
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| ⓘ | var. Chrome-Kaolinite | 9.ED.05 | (Al,Cr)2(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| H | ⓘ Opal | SiO2 · nH2O |
| H | ⓘ Kaolinite var. Chrome-Kaolinite | (Al,Cr)2(Si2O5)(OH)4 |
| C | Carbon | |
| C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| C | ⓘ Magnesite | MgCO3 |
| O | Oxygen | |
| O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Magnesite | MgCO3 |
| O | ⓘ Magnesiochromite | MgCr2O4 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Opal | SiO2 · nH2O |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Kaolinite var. Chrome-Kaolinite | (Al,Cr)2(Si2O5)(OH)4 |
| Mg | Magnesium | |
| Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Mg | ⓘ Magnesite | MgCO3 |
| Mg | ⓘ Magnesiochromite | MgCr2O4 |
| Al | Aluminium | |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Al | ⓘ Kaolinite var. Chrome-Kaolinite | (Al,Cr)2(Si2O5)(OH)4 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Opal | SiO2 · nH2O |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Kaolinite var. Chrome-Kaolinite | (Al,Cr)2(Si2O5)(OH)4 |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Pyrite var. Bravoite | (Fe,Ni)S2 |
| S | ⓘ Cinnabar | HgS |
| S | ⓘ Metacinnabar | HgS |
| S | ⓘ Millerite | NiS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Vaesite | NiS2 |
| Ca | Calcium | |
| Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | ⓘ Magnesiochromite | MgCr2O4 |
| Cr | ⓘ Kaolinite var. Chrome-Kaolinite | (Al,Cr)2(Si2O5)(OH)4 |
| Fe | Iron | |
| Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | ⓘ Pyrite var. Bravoite | (Fe,Ni)S2 |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
| Ni | Nickel | |
| Ni | ⓘ Pyrite var. Bravoite | (Fe,Ni)S2 |
| Ni | ⓘ Millerite | NiS |
| Ni | ⓘ Vaesite | NiS2 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
| Hg | ⓘ Metacinnabar | HgS |
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- California Coast RangesAccretionary Complex
- Franciscan DomainDomain
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Great Eastern and Mount Jackson Mine, Guerneville, Guerneville Mining District, Coast Range, Sonoma County, California, USA