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Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA

This page kindly sponsored by Tom Loomis
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Latitude & Longitude (WGS84): 43° 42' 56'' North , 103° 40' 9'' West
Latitude & Longitude (decimal): 43.71556,-103.66944
GeoHash:G#: 9xy28ynjw
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate


A former Be occurrence/mine located just SW of the center of Sec. 8, T3S, R4E, about 8.5 km SW of Custer.

Mineralization is in the primary and secondary phosphate-bearing Tip Top granite pegmatite body.

Note: Many early reported phosphate species from this locality have been re-identified, particularly regarding manganese, iron, or magnesium end-members. Old references may be at variance with modern nomenclature. Both Campbell, T.J. and Roberts, W.L. (1986) and Loomis, T.A. and Campbell, T.J. (2002) are definitive statements as to species identification.

Workings include surface openings comprised of a large open-cast mine pit.


Mineral List

Albite

Alluaudite

Almandine

Amblygonite

Arseniosiderite

Arsenopyrite

Autunite

Barbosalite

Beraunite

Bermanite

Beryl

'Biotite'

Bismuth

'Bobdownsite'

Cassiterite

Childrenite

Collinsite

'Columbite-Tantalite'

Crandallite

Cyrilovite

Diadochite

Dufrénite

Ehrleite (TL)

Elbaite

Englishite

Eosphorite

Fairfieldite

'Feldspar Group'

'var: Perthite'

Ferrisicklerite

Fluorapatite

Fransoletite (TL)

Frondelite

Galena

Goethite

Gordonite

Goyazite

Greifensteinite

Heterosite

Hopeite

Hureaulite

Hurlbutite

Hydroxylapatite

var: Carbonate-rich Hydroxylapatite

Hydroxylherderite

'Jahnsite-(CaMgMg)'

Jahnsite-(CaMnFe) ?

Jahnsite-(CaMnMg) (TL)

'Jahnsite Group'

Jahnsite-(NaFeMg) (TL)

'Jahnsite-(NaMnMg)'

Kidwellite

Kingsmountite

Kryzhanovskite

Laueite

Leucophosphite

Lithiophilite

Lithiophosphate

Ludlamite

Marcasite

Messelite

Meta-autunite

Metaswitzerite

Microcline

Mitridatite

'Monazite'

Montebrasite

Montgomeryite

Muscovite

Pahasapaite (TL)

Parafransoletite (TL)

Pararobertsite (TL)

Parascholzite

Perloffite

Pharmacosiderite

Phosphoferrite

Purpurite

Pyrite

Pyrolusite

Quartz

Robertsite (TL)

Rockbridgeite

Roscherite

Scholzite

Schorl

Scorodite

Segelerite (TL)

Sicklerite

Siderite

Spessartine

Sphalerite

Stewartite

Strengite

Strunzite

Switzerite

Tavorite

Tinsleyite (TL)

Tiptopite (TL)

Todorokite

Triphylite

Triploidite

Uraninite

Ushkovite

Vivianite

Wardite

Whiteite-(CaMnMg) (TL)

Whitlockite

Whitmoreite

Xanthoxenite

Zircon


96 valid minerals. 12 (TL) - type locality of valid minerals. 4 erroneous literature entries.

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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dunn, P.J., Roberts, W.L., Campbell, T.J., and Leavens, P.B. (1983) Red Montgomeryite and associated minerals from the Tip Top Pegmatite with notes on kingsmountite and calcioferrite. Mineralogical Record: 14 (3): 195-197.
Grice, Joel D., Peacor, Donald R., Robinson, George W., van Velthuizen, Jerry, Roberts, Willard L., Campbell, Thomas J., and Dunn, Pete J. (1985) Tiptopite (Li,K,Na,Ca,)8Be6(PO4)6(OH)4, a new mineral species from the Black Hills, South Dakota. The Canadian Mineralogist: 23: 43–46.
Rocks & Minerals (1985) 60: 117.
Campbell, T.J. and Roberts, W.L. (1986) Phosphate minerals from the Tip Top mine, Black Hills, South Dakota. Mineralogical Record: 17: 237-254.
Canadian Mineralogist (1989) 27: 699-702.
Moore, P.B. (2000) Analyses of Primary Phosphates from Pegmatites in Maine and Other Localities, in V.T. King (editor), Mineralogy of Maine. Mining History, Gems, and Geology. Maine Geological Survey, Augusta, Maine: 333-336.
Loomis, Thomas A. and Campbell, Thomas J. (2002) The Tip Top pegmatite, A Historical Review and Mineralogical Update. MATRIX: 10(3): 138-146.
Tait, K.T., Barkley, M.C., Thompson, R.M., Origlieri, M.J., Evans, S.H., Prewitt, C.T., and Yang, H. (2011) Bobdownsite, a new mineral species from Big Fish River, Yukon, Canada, and its structural relationship with whitlockite-type compounds. Canadian Mineralogist: 49: 1065-1078.

External Links


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