Helen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USAi
Regional Level Types | |
---|---|
Helen Beryl Mine | Mine |
Fourmile | Unincorporated Community |
Custer Mining District | Mining District |
Custer County | County |
South Dakota | State |
USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
43° 42' 46'' North , 103° 41' 48'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Custer | 1,952 (2017) | 9.9km |
Pringle | 109 (2017) | 14.2km |
Hill City | 995 (2017) | 26.3km |
Keystone | 343 (2017) | 30.2km |
Hot Springs | 3,532 (2017) | 36.0km |
Mindat Locality ID:
11785
Long-form identifier:
mindat:1:2:11785:3
GUID (UUID V4):
94aef2ad-e723-4a00-bc29-800d8e61c873
Other/historical names associated with this locality:
Sweepstakes Beryl; Big Tom claim; Kem claim
A beryl mine located in sec. 7, T.4S., R.4E., at Fourmile, SW of Custer. Operated chiefly in the 1940's (WWII).
Mineralization is an irregular, oval, zoned pegmatite body in quartz-mica schist.
Workings include a large open cut.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides | |||
---|---|---|---|
β | 'Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series' | 4.. | (Ta,Nb,Sn,Fe,Mn)4O8 |
β | Hematite | 4.CB.05 | Fe2O3 |
β | Quartz | 4.DA.05 | SiO2 |
β | Opal | 4.DA.10 | SiO2 Β· nH2O |
β | var. Opal-AN | 4.DA.10 | SiO2 Β· nH2O |
β | Cassiterite | 4.DB.05 | SnO2 |
Group 5 - Nitrates and Carbonates | |||
β | Siderite | 5.AB.05 | FeCO3 |
Group 8 - Phosphates, Arsenates and Vanadates | |||
β | Lithiophilite var. Sicklerite ? | 8.AB.10 | Li1-x(Mn3+xMn2+1-x)PO4 |
β | Purpurite ? | 8.AB.10 | Mn3+(PO4) |
β | Triphylite | 8.AB.10 | LiFe2+PO4 |
β | Heterosite | 8.AB.10 | (Fe3+,Mn3+)PO4 |
β | Triphylite var. Ferrisicklerite | 8.AB.10 | Li1-x(Fe3+xFe2+1-x)PO4 |
β | Alluaudite | 8.AC.10 | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
β | Amblygonite | 8.BB.05 | LiAl(PO4)F |
β | Fluorapatite | 8.BN.05 | Ca5(PO4)3F |
β | Vivianite | 8.CE.40 | Fe2+Fe2+2(PO4)2 Β· 8H2O |
β | Childrenite | 8.DD.20 | Fe2+Al(PO4)(OH)2 Β· H2O |
Group 9 - Silicates | |||
β | Eucryptite ? | 9.AA.05 | LiAlSiO4 |
β | Sillimanite | 9.AF.05 | Al2(SiO4)O |
β | Bertrandite | 9.BD.05 | Be4(Si2O7)(OH)2 |
β | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
β | Beryl | 9.CJ.05 | Be3Al2(Si6O18) |
β | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
β | Spodumene var. Hiddenite | 9.DA.30 | LiAlSi2O6 |
β | 9.DA.30 | LiAlSi2O6 | |
β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | Microcline | 9.FA.30 | K(AlSi3O8) |
β | Albite | 9.FA.35 | Na(AlSi3O8) |
Unclassified | |||
β | 'Tantalite' | - | (Mn,Fe)(Ta,Nb)2O6 |
β | 'Chlorite Group' | - | |
β | 'Hornblende Root Name Group' | - | β»Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2 |
β | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
β | 'Garnet Group' | - | X3Z2(SiO4)3 |
β | 'Columbite-Tantalite' | - | |
β | 'Manganese Oxides' | - | |
β | 'Triphylite Group' | - | VIM1VIM2TO4 |
β | 'Jahnsite Group' | - | XM1M22M32(H2O)8(OH)2(PO4)4 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Bertrandite | Be4(Si2O7)(OH)2 |
H | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
H | β Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
H | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
H | β Opal var. Opal-AN | SiO2 · nH2O |
H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
H | β Opal | SiO2 · nH2O |
H | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
H | β Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
H | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
H | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
H | β Jahnsite Group | XM1M22M32(H2O)8(OH)2(PO4)4 |
Li | Lithium | |
Li | β Amblygonite | LiAl(PO4)F |
Li | β Eucryptite | LiAlSiO4 |
Li | β Triphylite var. Ferrisicklerite | Li1-x(Fex3+Fe2+1-x)PO4 |
Li | β Lithiophilite var. Sicklerite | Li1-x(Mnx3+Mn2+1-x)PO4 |
Li | β Spodumene | LiAlSi2O6 |
Li | β Triphylite | LiFe2+PO4 |
Li | β Spodumene var. Hiddenite | LiAlSi2O6 |
Be | Beryllium | |
Be | β Bertrandite | Be4(Si2O7)(OH)2 |
Be | β Beryl | Be3Al2(Si6O18) |
B | Boron | |
B | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
C | Carbon | |
C | β Siderite | FeCO3 |
O | Oxygen | |
O | β Albite | Na(AlSi3O8) |
O | β Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
O | β Amblygonite | LiAl(PO4)F |
O | β Bertrandite | Be4(Si2O7)(OH)2 |
O | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
O | β Beryl | Be3Al2(Si6O18) |
O | β Cassiterite | SnO2 |
O | β Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
O | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
O | β Eucryptite | LiAlSiO4 |
O | β Triphylite var. Ferrisicklerite | Li1-x(Fex3+Fe2+1-x)PO4 |
O | β Fluorapatite | Ca5(PO4)3F |
O | β Hematite | Fe2O3 |
O | β Heterosite | (Fe3+,Mn3+)PO4 |
O | β Opal var. Opal-AN | SiO2 · nH2O |
O | β Microcline | K(AlSi3O8) |
O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
O | β Opal | SiO2 · nH2O |
O | β Purpurite | Mn3+(PO4) |
O | β Quartz | SiO2 |
O | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
O | β Lithiophilite var. Sicklerite | Li1-x(Mnx3+Mn2+1-x)PO4 |
O | β Siderite | FeCO3 |
O | β Sillimanite | Al2(SiO4)O |
O | β Spodumene | LiAlSi2O6 |
O | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
O | β Triphylite | LiFe2+PO4 |
O | β Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
O | β Spodumene var. Hiddenite | LiAlSi2O6 |
O | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
O | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
O | β Garnet Group | X3Z2(SiO4)3 |
O | β Triphylite Group | VIM1VIM2TO4 |
O | β Jahnsite Group | XM1M22M32(H2O)8(OH)2(PO4)4 |
F | Fluorine | |
F | β Amblygonite | LiAl(PO4)F |
F | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
F | β Fluorapatite | Ca5(PO4)3F |
F | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
Na | Sodium | |
Na | β Albite | Na(AlSi3O8) |
Na | β Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
Na | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
Mg | Magnesium | |
Mg | β Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
Mg | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Al | Aluminium | |
Al | β Albite | Na(AlSi3O8) |
Al | β Amblygonite | LiAl(PO4)F |
Al | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Al | β Beryl | Be3Al2(Si6O18) |
Al | β Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
Al | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Al | β Eucryptite | LiAlSiO4 |
Al | β Microcline | K(AlSi3O8) |
Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Al | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
Al | β Sillimanite | Al2(SiO4)O |
Al | β Spodumene | LiAlSi2O6 |
Al | β Spodumene var. Hiddenite | LiAlSi2O6 |
Al | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
Al | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Si | Silicon | |
Si | β Albite | Na(AlSi3O8) |
Si | β Bertrandite | Be4(Si2O7)(OH)2 |
Si | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Si | β Beryl | Be3Al2(Si6O18) |
Si | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | β Eucryptite | LiAlSiO4 |
Si | β Opal var. Opal-AN | SiO2 · nH2O |
Si | β Microcline | K(AlSi3O8) |
Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | β Opal | SiO2 · nH2O |
Si | β Quartz | SiO2 |
Si | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
Si | β Sillimanite | Al2(SiO4)O |
Si | β Spodumene | LiAlSi2O6 |
Si | β Spodumene var. Hiddenite | LiAlSi2O6 |
Si | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
Si | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Si | β Garnet Group | X3Z2(SiO4)3 |
P | Phosphorus | |
P | β Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
P | β Amblygonite | LiAl(PO4)F |
P | β Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
P | β Triphylite var. Ferrisicklerite | Li1-x(Fex3+Fe2+1-x)PO4 |
P | β Fluorapatite | Ca5(PO4)3F |
P | β Heterosite | (Fe3+,Mn3+)PO4 |
P | β Purpurite | Mn3+(PO4) |
P | β Lithiophilite var. Sicklerite | Li1-x(Mnx3+Mn2+1-x)PO4 |
P | β Triphylite | LiFe2+PO4 |
P | β Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
P | β Jahnsite Group | XM1M22M32(H2O)8(OH)2(PO4)4 |
Cl | Chlorine | |
Cl | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
K | Potassium | |
K | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
K | β Microcline | K(AlSi3O8) |
K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
K | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Ca | Calcium | |
Ca | β Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
Ca | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Ca | β Fluorapatite | Ca5(PO4)3F |
Ca | β Hornblende Root Name Group | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
Ti | Titanium | |
Ti | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
V | Vanadium | |
V | β Triphylite Group | VIM1VIM2TO4 |
Mn | Manganese | |
Mn | β Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
Mn | β Heterosite | (Fe3+,Mn3+)PO4 |
Mn | β Purpurite | Mn3+(PO4) |
Mn | β Lithiophilite var. Sicklerite | Li1-x(Mnx3+Mn2+1-x)PO4 |
Mn | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
Fe | Iron | |
Fe | β Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
Fe | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Fe | β Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
Fe | β Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Fe | β Triphylite var. Ferrisicklerite | Li1-x(Fex3+Fe2+1-x)PO4 |
Fe | β Hematite | Fe2O3 |
Fe | β Heterosite | (Fe3+,Mn3+)PO4 |
Fe | β Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
Fe | β Siderite | FeCO3 |
Fe | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
Fe | β Triphylite | LiFe2+PO4 |
Fe | β Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
Nb | Niobium | |
Nb | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
Sn | Tin | |
Sn | β Cassiterite | SnO2 |
I | Iodine | |
I | β Triphylite Group | VIM1VIM2TO4 |
Ta | Tantalum | |
Ta | β Tantalite | (Mn,Fe)(Ta,Nb)2O6 |
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.