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Oat Hill Mines, Aetna Springs, East Mayacmas Mining District, Napa County, California, USAi
Regional Level Types
Oat Hill MinesGroup of Mines
Aetna SpringsGroup of Springs
East Mayacmas Mining DistrictMining District
Napa CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
38° 40' 30'' North , 122° 31' 37'' West
Latitude & Longitude (decimal):
Type:
Group of Mines
Nearest Settlements:
PlacePopulationDistance
Middletown1,323 (2011)11.5km
Calistoga5,330 (2017)11.6km
Angwin3,051 (2011)12.9km
Hidden Valley Lake5,579 (2011)15.0km
Deer Park1,267 (2011)16.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Santa Rosa Mineral And Gem Society, Inc.Santa Rosa, California31km
Mindat Locality ID:
27905
Long-form identifier:
mindat:1:2:27905:6
GUID (UUID V4):
0ae8ace5-f735-45db-b924-b7fe5d5b7e69


A former Hg mine complex located in secs. 27, 28, 33 & 34, T10N, R5W, MDM, 4.6 km (2.9 miles) WNW of Aetna Springs.

Mineralization is Hg deposits associated with fault structures and the borders of serpentine masses. Pyrite is always a common accessory mineral.

Workings featured 20 miles of underground tunneling.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


9 valid minerals.

Detailed Mineral List:

β“˜ Calomel
Formula: [Hg2]2+Cl2
Colour: White
Description: Occurs as coatings on metacinnabar.
β“˜ Cinnabar
Formula: HgS
Description: Occurs as veins and veinlets with minor metacinnabar and mercury in Franciscan sandstone, shale of the Great Valley sequence and serpentine.
β“˜ Epsomite
Formula: MgSO4 · 7H2O
Description: Occurs as extensive deposits.
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
β“˜ Mercury
Formula: Hg
β“˜ Metacinnabar
Formula: HgS
Description: Occurs with coatings of calomel.
β“˜ Millerite
Formula: NiS
β“˜ Pyrite
Formula: FeS2
Description: A very common accessory mineral.
β“˜ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
β“˜ Sulphur
Formula: S8

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Mercury1.AD.05Hg
β“˜Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
β“˜Metacinnabar2.CB.05aHgS
β“˜Millerite2.CC.20NiS
β“˜Cinnabar2.CD.15aHgS
β“˜Pyrite2.EB.05aFeS2
Group 3 - Halides
β“˜Calomel3.AA.30[Hg2]2+Cl2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Epsomite7.CB.40MgSO4 Β· 7H2O
Group 9 - Silicates
β“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified
β“˜'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hβ“˜ EpsomiteMgSO4 · 7H2O
Hβ“˜ KaoliniteAl2(Si2O5)(OH)4
Hβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
OOxygen
Oβ“˜ EpsomiteMgSO4 · 7H2O
Oβ“˜ KaoliniteAl2(Si2O5)(OH)4
Oβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
MgMagnesium
Mgβ“˜ EpsomiteMgSO4 · 7H2O
AlAluminium
Alβ“˜ KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Siβ“˜ KaoliniteAl2(Si2O5)(OH)4
Siβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sβ“˜ CinnabarHgS
Sβ“˜ EpsomiteMgSO4 · 7H2O
Sβ“˜ MetacinnabarHgS
Sβ“˜ MilleriteNiS
Sβ“˜ PyriteFeS2
Sβ“˜ SulphurS8
ClChlorine
Clβ“˜ Calomel[Hg2]2+Cl2
FeIron
Feβ“˜ PyriteFeS2
NiNickel
Niβ“˜ MilleriteNiS
HgMercury
Hgβ“˜ Calomel[Hg2]2+Cl2
Hgβ“˜ CinnabarHgS
Hgβ“˜ MercuryHg
Hgβ“˜ MetacinnabarHgS

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate
USA

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.

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