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Linwood Mine (Phenakite Prospect), Custer, Custer Mining District, Custer County, South Dakota, USAi
Regional Level Types
Linwood Mine (Phenakite Prospect)Mine
CusterCity
Custer Mining DistrictMining District
Custer CountyCounty
South DakotaState
USACountry

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Latitude & Longitude (WGS84):
43° 38' 21'' North , 103° 35' 27'' West
Latitude & Longitude (decimal):
43.63936,-103.59086
GRN:
N30W54
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Pringle109 (2017)3.4km
Custer1,952 (2017)14.2km
Hot Springs3,532 (2017)24.9km
Buffalo Gap121 (2017)27.8km
Keystone343 (2017)31.7km
Mindat Locality ID:
31963
Long-form identifier:
mindat:1:2:31963:7
GUID (UUID V4):
0


Granite pegmatite. Near Nihart.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


8 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 8 - Phosphates, Arsenates and Vanadates
ⓘTriphylite8.AB.10LiFe2+PO4
ⓘHureaulite8.CB.10Mn2+5(PO3OH)2(PO4)2 · 4H2O
ⓘBermanite8.DC.20Mn2+Mn3+2(PO4)2(OH)2 · 4H2O
ⓘRobertsite8.DH.30Ca2Mn3+3(PO4)3O2 · 3H2O
Group 9 - Silicates
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Apatite Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
Hⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ RobertsiteCa2Mn33+(PO4)3O2 · 3H2O
LiLithium
Liⓘ TriphyliteLiFe2+PO4
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Oⓘ MicroclineK(AlSi3O8)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ RobertsiteCa2Mn33+(PO4)3O2 · 3H2O
Oⓘ TriphyliteLiFe2+PO4
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ MicroclineK(AlSi3O8)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ MicroclineK(AlSi3O8)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
PPhosphorus
Pⓘ BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
Pⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Pⓘ RobertsiteCa2Mn33+(PO4)3O2 · 3H2O
Pⓘ TriphyliteLiFe2+PO4
KPotassium
Kⓘ MicroclineK(AlSi3O8)
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ RobertsiteCa2Mn33+(PO4)3O2 · 3H2O
MnManganese
Mnⓘ BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
Mnⓘ HureauliteMn52+(PO3OH)2(PO4)2 · 4H2O
Mnⓘ RobertsiteCa2Mn33+(PO4)3O2 · 3H2O
FeIron
Feⓘ TriphyliteLiFe2+PO4

Other Databases

Link to USGS MRDS:10202313

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

King, Vandall T. (2000) Mineralogy of Maine Vol. 2 - Mining History, Gems, and Geology. Maine Geological Survey.pp.333-336
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