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Thayer Mine (Grey House Mine; Greyhouse Mine; Grayhouse Mine), Waters Peak, Pardee Mining District, Amador County, California, USAi
Regional Level Types
Thayer Mine (Grey House Mine; Greyhouse Mine; Grayhouse Mine)Mine
Waters PeakPeak
Pardee Mining DistrictMining District
Amador CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
38° 15' 17'' North , 120° 53' 3'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Buena Vista429 (2011)5.1km
Camanche North Shore979 (2017)6.2km
Camanche Village847 (2011)8.0km
Valley Springs3,553 (2011)8.5km
Wallace403 (2011)10.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Amador County Gem & Mineral SocietySutter Creek, California17km
Calaveras Gem & Mineral SocietyAngels Camp, California37km
Stockton Lapidary & Mineral ClubStockton, California49km
Mindat Locality ID:
73924
Long-form identifier:
mindat:1:2:73924:8
GUID (UUID V4):
b7f5f262-838c-4880-bf7c-240ba857ff31


A former lode Cu-Zn-Pb occurrence/mine located in sec. 28, T5N, R10E, MDM, 2.1 km (1.3 miles) SW of Waters Peak (coordinates of record) (10 miles SW of Ione), on private land. Owned by the East Bay Municipal Utility District, Oakland, California (Pardee Reservoir land).MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is hosted in metavolcanic rock. Disseminated sulfides occur in sheared, meta-volcanic rock intruded by quartz porphyry. Local alteration includes sericitization, silicification and pyritization. Local rocks include Eocene nonmarine rocks, unit 1 (Northern and Central California).

Local geologic structures include 3 types of faults: 1) E-dipping, high-angle strike faults; 2) low-angle, reverse faults that strike N50W-N and dip 25 to 50E; 3) high-angle faults that strike NE. Folds with amplitudes of 1 to 6 feet plunge 78-84N. Most are overturned with axial planes dipping eastward.

Workings include underground openings with an overall depth of 76.2 meters. Developed by cuts and 1 shaft 250 feet deep with levels at 40, 200, 240 feet. The 40 foot level consists of a 210 foot crosscut E and 30 feet W of the shaft. The 240 foot level has a crosscut and drift that extends about 700 feet NW.

No production was recorded.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

β“˜ Calcite
Formula: CaCO3
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ Galena
Formula: PbS
β“˜ 'Jasper'
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: Occurs as an alteration product.
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Description: Occurs as an alteration product.
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
β“˜ Quartz var. Milky Quartz
Formula: SiO2
β“˜ Sphalerite
Formula: ZnS
β“˜ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Sphalerite2.CB.05aZnS
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Galena2.CD.10PbS
β“˜Pyrite2.EB.05aFeS2
β“˜'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 4 - Oxides and Hydroxides
β“˜Quartz4.DA.05SiO2
β“˜var. Milky Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
Group 9 - Silicates
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
β“˜'Jasper'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ CalciteCaCO3
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ Quartz var. Milky QuartzSiO2
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
AlAluminium
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ Quartz var. Milky QuartzSiO2
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ GalenaPbS
Sβ“˜ PyriteFeS2
Sβ“˜ SphaleriteZnS
Sβ“˜ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
KPotassium
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
FeIron
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ PyriteFeS2
CuCopper
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znβ“˜ SphaleriteZnS
SbAntimony
Sbβ“˜ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
PbLead
Pbβ“˜ GalenaPbS

Other Databases

Link to USGS MRDS:10028069

Other Regions, Features and Areas containing this locality


This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

 
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