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Yankee Jims, Forest Hill Mining District, Placer County, California, USAi
Regional Level Types
Yankee Jims- not defined -
Forest Hill Mining DistrictMining District
Placer CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
39° 1' 46'' North , 120° 51' 42'' West
Latitude & Longitude (decimal):
39.02944,-120.86167
GeoHash:
G#: 9qfn19p4z
GRN:
N27W67
KΓΆppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Foresthill1,483 (2011)3.9km
Colfax2,005 (2017)11.2km
Georgetown2,367 (2011)13.8km
Meadow Vista3,217 (2011)14.2km
Auburn Lake Trails3,426 (2011)15.0km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Nevada County Gem & Mineral SocietyGrass Valley, California27km
El Dorado County Mineral and Gem SocietyPlacerville, California34km
Gold Country Treasure SeekersPlacerville, California34km
Roseville Rock RollersRoseville, California48km
Mindat Locality ID:
215881
Long-form identifier:
mindat:1:2:215881:8
GUID (UUID V4):
71d9e0e4-c51b-469a-897e-b6cb128a4e02



A populated place located N of Devils Canyon.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

6 valid minerals.

Detailed Mineral List:

β“˜ Gold
Formula: Au
Description: Locality of the famous "Golden Bear" nugget (1871).
β“˜ Manganite
Formula: Mn3+O(OH)
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: Occurs as sericite schist or phyllite.
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Description: Occurs as sericite schist or phyllite.
β“˜ 'Psilomelane'
β“˜ Pyrolusite
Formula: Mn4+O2
β“˜ Quartz
Formula: SiO2
Description: Crystals up to an inch long and Β½ inch thick.
β“˜ Rhodonite
Formula: CaMn3Mn[Si5O15]

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
β“˜Quartz4.DA.05SiO2
β“˜Pyrolusite4.DB.05Mn4+O2
β“˜Manganite4.FD.15Mn3+O(OH)
Group 9 - Silicates
β“˜Rhodonite9.DK.05CaMn3Mn[Si5O15]
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
β“˜'Psilomelane'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ ManganiteMn3+O(OH)
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
OOxygen
Oβ“˜ ManganiteMn3+O(OH)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ PyrolusiteMn4+O2
Oβ“˜ QuartzSiO2
Oβ“˜ RhodoniteCaMn3Mn[Si5O15]
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
AlAluminium
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ RhodoniteCaMn3Mn[Si5O15]
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
KPotassium
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ RhodoniteCaMn3Mn[Si5O15]
MnManganese
Mnβ“˜ ManganiteMn3+O(OH)
Mnβ“˜ PyrolusiteMn4+O2
Mnβ“˜ RhodoniteCaMn3Mn[Si5O15]
AuGold
Auβ“˜ GoldAu

Localities in this Region

USA
USA

Other Regions, Features and Areas containing this locality

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

Bradley, W.W., Huguenin, Emile, Logan, C.A., Tucker, W.B., and Waring, C.A. (1918), Manganese and chromium in California: California Mining Bureau. Bulletin 76: 52.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: frontice piece, 298.
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