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⇱ Twin Peaks Mine, Twin Peaks, Calistoga, Napa County, California, USA

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Twin Peaks Mine, Twin Peaks, Calistoga, Napa County, California, USAi
Regional Level Types
Twin Peaks MineMine
Twin PeaksGroup of Peaks
Calistoga- not defined -
Napa CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
38° 39' 45'' North , 122° 32' 2'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Calistoga5,330 (2017)10.1km
Angwin3,051 (2011)12.1km
Middletown1,323 (2011)12.2km
Deer Park1,267 (2011)15.5km
Hidden Valley Lake5,579 (2011)16.3km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Santa Rosa Mineral And Gem Society, Inc.Santa Rosa, California29km
Mindat Locality ID:
83722
Long-form identifier:
mindat:1:2:83722:1
GUID (UUID V4):
0


A former Hg-Cr-Ni mine located in sec. 4, T9N, R6W, MDM, 1.5 km (5,100 feet) S of Twin Peaks.

Mineralization is related to a serpentine - sandstone contact and is hosted in serpentinite.

Production data are found in: U.S. Bureau of Mines file data.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

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 Diagram

Entries shown in red are rocks recorded for this region.

Detailed Mineral List:

ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Cinnabar
Formula: HgS
ⓘ Millerite
Formula: NiS
ⓘ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘMillerite2.CC.20NiS
ⓘCinnabar2.CD.15aHgS
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
Group 9 - Silicates
ⓘSaponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O

List of minerals for each chemical element

HHydrogen
Hⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
OOxygen
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mgⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
AlAluminium
Alⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SiSilicon
Siⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SSulfur
Sⓘ CinnabarHgS
Sⓘ MilleriteNiS
CaCalcium
Caⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
NiNickel
Niⓘ MilleriteNiS
HgMercury
Hgⓘ CinnabarHgS

Other Regions, Features and Areas containing this locality

North AmericaContinent
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.

References

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