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Morefield Mine (Morefield Pegmatite), Winterham, Amelia Co., Virginia, USA



Detailed Mineral List:
Albite
Formula: NaAlSi3O8
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Photo: Albite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Albite var: Cleavelandite
Reference: Virginia Minerals, Vol 46:2; Rocks & Min.: 60:165.
Photo: Cleavelandite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Reference: USGS Bulletin 248B (1952)
Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: USGS Bulletin 248B (1952)
Photo: Almandine from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Andradite
Formula: Ca3Fe3+2(SiO4)3
Description: Erroneously reported in a letter to the editor. No data.
Reference: Letter to the Editor, Rocks & Min.: 8:143-144.
Anorthite var: Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Rocks & Min.: 8:143-144.
'Apatite'
Reference: [Virginia Minerals, Vol 46:2]
Bermanite
Formula: Mn2+Mn3+2(PO4)2(OH)2 · 4H2O
Reference: [Virginia Minerals, Vol 46:2]
Bertrandite
Formula: Be4(Si2O7)(OH)2
Reference: USGS Bulletin 248B (1952)
Beryl
Formula: Be3Al2(Si6O18)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Photo: Beryl from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Reference: Minerals of Virginia, 1990 by R. V. Dietrich
Photo: Aquamarine from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Beryl var: Goshenite
Reference: USGS Bulletin 248B (1952)
'Biotite'
Reference: Rocks & Min.: 8:143-144.
Photo: Biotite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Bismutite
Formula: (BiO)2CO3
Reference: [Virginia Minerals, Vol 46:2]
Brockite
Formula: (Ca,Th,Ce)PO4 · H2O
Reference: [Virginia Minerals, Vol 46:2]
Photo: Brockite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Calcite
Formula: CaCO3
Reference: USGS Bulletin 248B (1952)
Photo: Calcite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Cassiterite
Formula: SnO2
Reference: [Virginia Minerals, Vol 46:2]
Photo: Cassiterite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Cerussite
Formula: PbCO3
Reference: [Virginia Minerals, Vol 46:2]
Chalcopyrite
Formula: CuFeS2
Reference: USGS Bulletin 248B (1952)
Chiolite
Formula: Na5Al3F14
Reference: [L.E. Kearns, 1995 - Mineralogical Record Vol 26 No.6 - "Alumino-Fluorides from the Morefield Pegmatite"]
Photo: © Antonio Borrelli. Chiolite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Chrysoberyl
Formula: BeAl2O4
Reference: Rocks & Min.: 8:143-144.
Columbite-(Fe)
Formula: FeNb2O6
Reference: Rocks & Min.: 8:143-144.
Photo: Columbite-(Fe) from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Cryolite
Formula: Na3[AlF6]
Reference: [L.E. Kearns, 1995 - Mineralogical Record Vol 26 No.6 - "Alumino-Fluorides from the Morefield Pegmatite"]
Photo: Cryolite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Elpasolite
Formula: NaK2[AlF6]
Reference: [Kearns, 1995 "Alumino-Fluorides from the Morefield Pegmatite", MinRec 26:551-556]
Photo: Elpasolite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Euclase
Formula: BeAl(SiO4)(OH)
Reference: Rocks & Min.: 8:143-144.
Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ti,Ta)2O6
Reference: Minerals of Virginia, 1990 by R. V. Dietrich
Ferro-hornblende
Formula: ☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Reference: Rocks & Min.: 8:143-144.
Fluellite
Formula: Al2(PO4)F2(OH) · 7H2O
Reference: [Virginia Minerals, Vol 46:2]
Fluorapatite
Formula: Ca5(PO4)3F
Reference: [Virginia Minerals, Vol 46:2]
Photo: Fluorapatite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Fluorite
Formula: CaF2
Reference: [Kearns, 1995 - "Alumino-Fluorides from the Morefield Pegmatite"
Photo: Fluorite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Fluorite var: Chlorophane
Reference: Minerals of Virginia, 1990 by R. V. Dietrich
Galena
Formula: PbS
Reference: [Virginia Minerals, Vol 46:2]
Photo: Galena from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Gearksutite
Formula: Ca[Al(F,OH)5(H2O)]
Reference: [Virginia Minerals, Vol 46:2]
Photo: Gearksutite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Goyazite
Formula: SrAl3(PO4)2(OH)5 · H2O
Reference: Rocks & Minerals 79:4 p 256
Helvine
Formula: Mn2+4(Be3Si3O12)S
Reference: Rocks & Min.: 8:143-144.
Hollandite
Formula: Ba(Mn4+6Mn3+2)O16
Reference: [Virginia Minerals, Vol 46:2]
Illite var: Leverrierite
Reference: USGS Bulletin 248B (1952)
Ilmenite
Formula: Fe2+TiO3
Reference: Rocks & Min.: 8:143-144.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Rocks & Min.: 8:143-144.
Photo: Kaolinite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Lead
Formula: Pb
Reference: Rocks & Minerals 79:4 p 256
Photo: Lead from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Lindbergite
Formula: Mn2+(C2O4) · 2H2O
Reference: American Mineralogist, 89, 1087-1091
Masutomilite
Formula: (K,Rb)(Li,Mn3+,Al)3(AlSi3O10)(F,OH)2
Reference: Rocks & Minerals 71:3 pp198-199
Photo: Masutomilite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Microcline
Formula: KAlSi3O8
Reference: Rocks & Min.: 8:143-144.
Photo: Microcline from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Microcline var: Amazonite
Reference: [Virginia Minerals, Vol 46:2]
Photo: Amazonite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Microlite Group
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Photo: © 2001 John H. Betts. Microlite Group from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Molybdenite
Formula: MoS2
Reference: Rocks & Minerals 79:4 p 256
'Monazite'
Reference: [Virginia Minerals, Vol 46:2]
Photo: Monazite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
'Moonstone'
Reference: Minerals of Virginia, 1990 by R. V. Dietrich
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: [Virginia Minerals, Vol 46:2]
Photo: Muscovite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Muscovite var: Sericite
Reference: USGS Bulletin 248B (1952)
Opal var: Opal-AN
Formula: SiO2 · nH2O
Reference: Mike Dennis specimens
Orthoclase
Formula: KAlSi3O8
Description: Historical reports of blocky "orthoclase" in virtually every granite pegmatite worldwide are microcline. No data supporting orthoclse from this locality are known.
Reference: Rocks & Min.: 8:143-144.
Pachnolite
Formula: NaCa[AlF6] · H2O
Reference: [L.E. Kearns, 1995 - Mineralogical Record Vol 26 No.6 - "Alumino-Fluorides from the Morefield Pegmatite"]
Phenakite
Formula: Be2SiO4
Reference: Rocks & Min.: 8:143-144.
Photo: Phenakite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Phlogopite
Formula: KMg3(AlSi3O10)(OH,F)2
Description: Unbelievable antique report of phlogopite from a pegmatite. No data presented.
Reference: Letter to the Editor, Rocks & Min.: 8:143-144.
Phosphophyllite
Formula: Zn2Fe(PO4)2 · 4H2O
Reference: USGS Bulletin 248B (1952)
Phosphosiderite
Formula: FePO4 · 2H2O
Reference: Rocks & Minerals 79:4 p 256
Photo: © Brander Robinson. Phosphosiderite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Phosphuranylite
Formula: (H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Reference: Minerals of Virginia 1990 by R. V. Dietrich
Prosopite
Formula: CaAl2(F,OH)8
Reference: [Kearns, 1995 - "Alumino-Fluorides from the Morefield Pegmatite", Mineralogical Record 26 551-557]
Photo: © jbr. Prosopite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Pyrite
Formula: FeS2
Reference: USGS Bulletin 248B (1952)
Pyrolusite
Formula: MnO2
Reference: USGS Bulletin 248B (1952)
Pyromorphite
Formula: Pb5(PO4)3Cl
Reference: [Virginia Minerals, Vol 46:2]
Quartz
Formula: SiO2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Photo: Quartz from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Quartz var: Agate
Formula: SiO2
Reference: Rocks & Min.: 8:143-144.
Quartz var: Rock Crystal
Reference: Rocks & Min.: 8:143-144.
Quartz var: Smoky Quartz
Formula: SiO2
Reference: Rocks & Min.: 8:143-144.
Photo: Smoky Quartz from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Ralstonite
Formula: NaMg[Al(F,OH)6] · H2O
Reference: [Kearns, 1995- "Alumino-Fluorides from the Morefield Pegmatite", MinRec 26:551-557]
Rutile
Formula: TiO2
Reference: Rocks & Min.: 8:143-144.
Samarskite-(Y)
Formula: (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Reference: Minerals of Virginia 1990 by R. V. Dietrich
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: USGS Bulletin 248B (1952)
Photo: Schorl from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Spessartine
Formula: Mn2+3Al2(SiO4)3
Reference: Rocks & Min.: 8:143-144.
Photo: © . Spessartine from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Spodumene
Formula: LiAlSi2O6
Reference: USGS Bulletin 248B (1952)
Strengite
Formula: FePO4 · 2H2O
Reference: [Virginia Minerals, Vol 46:2]
Photo: Strengite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Sussexite
Formula: Mn2+BO2(OH)
Reference: Rocks & Minerals 79:4 p 256
Tantalite-(Mn)
Formula: MnTa2O6
Reference: USGS Bulletin 248B (1952)
Photo: Tantalite-(Mn) from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Thomsenolite
Formula: NaCa[AlF6] · H2O
Reference: [L.E. Kearns, 1995 - Mineralogical Record Vol 26 No.6 - "Alumino-Fluorides from the Morefield Pegmatite"]
Titanite
Formula: CaTi(SiO4)O
Reference: USGS Bulletin 248B (1952)
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: Rocks & Min.: 8:143-144.
Photo: © Brander Robinson. Topaz from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Triplite
Formula: (Mn2+,Fe2+)2(PO4)(F,OH)
Reference: Minerals of Virginia 1990 by R. V. Dietrich
Photo: © . Triplite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Weddellite
Formula: Ca(C2O4) · 2H2O
Reference: Rocks & Minerals 79:4 p 256
'Zinnwaldite'
Formula: KLiFe2+Al(AlSi3O10)(F,OH)2
Reference: USGS Bulletin 248B (1952)
Photo: Zinnwaldite from Morefield Mine, Winterham, Amelia Co., Virginia, USA
Zircon
Formula: ZrSiO4
Reference: [Virginia Minerals, Vol 46:2]
Photo: Zircon from Morefield Mine, Winterham, Amelia Co., Virginia, USA


82 entries listed. 61 valid minerals. 4 erroneous literature entries.

References

Virginia Minerals, Vol. 46.

Rocks & Minerals (1933): 8: 143-144.

USGS Bulletin 248B (1952).

Brown, W.R. (1962) Mica and Feldspar Deposits of Virginia.

Rocks and Minerals (1985): 60: 165.

Sweet, P.C. and Penick, D.A., Jr. (1986), Morefield Pegmatite Mine Reopens - Virginia's only Active Underground Gem Mine.

Virginia Geologic Survey Bulletin 33.

Minerals of the Morefield Pegmatite, Amelia County, Virginia.
Rocks & Minerals (1993): 68: 232-242.

Virginia Division of Mineral Resources Report 3, Charlottesville, VA: 59-60, 61-94.

Virginia Minerals, Vol. 32, No 2: Virginia Division of Mineral Resources, Charlottesville, VA.
Lance Kearns morefield's microlite analysis: Rock & Minerals Vol 68 #4 P 238
Kearns, L.E. (1995) Alumino-fluorides from the Morefield pegmatite, Amelia County, Virginia. Mineralogical Record: 26: 551-556.

Rocks & Minerals (1996): 71(3): 198-199.


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