Big Chief Mine (Johnson pegmatite), Glendale, Keystone District, Pennington Co., South Dakota, USA

Olmsteadite
Big Chief Mine, Glendale, Keystone District, Pennington Co., South Dakota, USA

Photo: 2004 ROM

Latitude: 43°53'N
Longitude: 103°25'W

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A feldspar and beryllium mine in the Big Chief granite pegmatite. Located about 5 km SE of Keystone near Glendale.

Mineral List

Albite
Alluaudite
Arrojadite-(BaFe)
Arsenopyrite
Autunite
Baryte
Beraunite
Bermanite
Beryl
Chalcopyrite
Childrenite
Columbite
Diadochite
Ferrisicklerite
Fluorapatite
var: Carbonate-rich Fluorapatite
Galena
Garyansellite

Goyazite
Greenockite
Gypsum
Hawleyite ?
Heterosite
Hopeite
Hureaulite
var: Bastinite
Hydroxylapatite
Kidwellite
Kryzhanovskite
Laueite
Leucophosphite
Lithiophilite
Löllingite
Ludlamite
Messelite
Meta-autunite

Metatorbernite
Metavivianite (TL)
'Mica Group'
Microcline
Mitridatite
Muscovite
Natrojarosite
Olmsteadite (TL)
Parasymplesite
Perloffite (TL)
Phosphoferrite
Phosphophyllite
Phosphosiderite
Pyrite
Pyrrhotite
Quartz
var: Rose Quartz
Reddingite

Robertsite
Rockbridgeite
Schorl
Scorodite
Siderite
Spessartine
Sphalerite
Stewartite
Strunzite
Sulphur
Torbernite
Triphylite
Triplite
Vivianite
Whitmoreite
Wolfeite
Zircon

71 entries listed. 66 valid minerals. 3 type localities (valid minerals).

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References

Rocks & Minerals: 60: 116.
Norton, James J. (1964) Pegmatites and other Precambrian Rocks in the Southern Black Hills; Geology and mineral deposits of some pegmatites in the southern Black Hills, South Dakota. USGS Professional Paper 297E.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Jobs in South Dakota, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: 26th Jan 2012 17:25:53