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Gainesite

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Gainesite

Nevel Quarry, Newry, Oxford Co., Maine, USA
Gainesite

Nevel Quarry, Newry, Oxford Co., Maine, USA
Gainesite

Nevel Quarry, Newry, Oxford Co., Maine, USA
Gainesite

Nevel Quarry, Newry, Oxford Co., Maine, USA
Gainesite

Nevel Quarry, Newry, Oxford Co., Maine, USA
Gainesite

Nevel Quarry, Newry, Oxford Co., Maine, USA
Gainesite

Nevel Quarry, Newry, Oxford Co., Maine, USA
Gainesite

Nevel Quarry, Newry, Oxford Co., Maine, USA
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About GainesiteHide

Richard V.Gaines
Formula:
Na(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2O
Colour:
Lavender to pale purple
Lustre:
Sub-Adamantine, Vitreous
Hardness:
4
Specific Gravity:
2.94
Crystal System:
Tetragonal
Member of:
Gainesite Group
Name:
Named in 1983 by Paul Brian Moore, Takaharu Araki, Ian M. Steele., George H. Swihart and Anthony Robert Kampf in honor of the US American Richard Venable Gaines [January 25, 1917 Poughkeepsie, New York, USA - January 21, 1994 Earlysville, Virginia, USA], economic geologist with Cabot Minerals and others, mineralogist, and collector of pegmatite, especially Be minerals. He was also an expert in tellurium minerals and named a number of mineral species. He was senior author of the 8th edition of Dana's System of Mineralogy.
Minute steeply pyramidal, pale lilac to slightly blue purple crystals usually about 0.1-0.2 mm.


Classification of GainesiteHide

IMA status:
Approved
Approval Year:
1978
Strunz 8th ed.:
7/C.02-20
Nickel-Strunz 10th (pending) ed.:
8.CA.20

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
A : With small and large/medium cations
Dana 8th ed.:
40.5.4.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
5 : AXO4·xH2O
Hey's CIM Ref.:
19.3.11

19 : Phosphates
3 : Phosphates of Be and Mg

Pronounciation of GainesiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of GainesiteHide

Lustre:
Sub-Adamantine, Vitreous
Transparency:
Transparent
Comment:
Very bright
Colour:
Lavender to pale purple
Comment:
Not a blue mineral.
Streak:
white
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
2.94 g/cm3 (Measured)    2.84 g/cm3 (Calculated)

Optical Data of GainesiteHide

Type:
Uniaxial (+)
RI values:
nω = 1.618 nε = 1.630
Birefringence:
0.045
Max Birefringence:
δ = 0.012
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Optical Extinction:
Parallel
Pleochroism:
Non-pleochroic

Chemical Properties of GainesiteHide

Formula:
Na(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2O
IMA Formula:
Na2(Be,Li)Zr2(PO4)4 · 1.5H2O
Elements listed:
Be, H, Li, Na, O, P, Zr - search for minerals with similar chemistry

Crystallography of GainesiteHide

Crystal System:
Tetragonal
Class (H-M):
4mm - Ditetragonal Pyramidal
Space Group:
I41md
Cell Parameters:
a = 6.567 Å, c = 17.119 Å
Ratio:
a:c = 1 : 2.607
Unit Cell V:
738.27 ų (Calculated from Unit Cell)
Z:
2
Morphology:
{111}, {001}

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.07 (100)
4.24 (30)
3.27 (90)
3.02 (50)
2.88 (40)
2.17 (30)
2.01 (30)
1.673 (30)
Comments:
35-604

Type Occurrence of GainesiteHide

Type Locality:
ⓘ Nevel Quarry (Twin tunnels; United Feldspar Quarry), Newry, Oxford Co., Maine, USA
Place of Conservation of Type Material:
Smithsonian Institution
Geological Setting of Type Material:
Late stage granite pegmatite mineralization.
Associated Minerals at Type Locality:
EosphoriteCleavelandite

Synonyms of GainesiteHide

Other Language Names for GainesiteHide

German:Gainesit
Spanish:Gainesita

Relationship of Gainesite to other SpeciesHide

Member of:
Gainesite Group
Other Members of this group:
MccrillisiteNaCs(Be,Li)Zr2(PO4)4 · 1-2H2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
SelwyniteNaK(Be,Al)Zr2(PO4)4 · 2H2OTet.

Related Minerals - Nickel-Strunz GroupingHide

8.CA.DavidlloyditeZn3(AsO4)2·4H2O Tric. 1 : P1
8.CA.ApexiteNaMg(PO4)·9H2OTric. 1 : P1
8.CA.05FransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2OMon.
8.CA.05ParafransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2OTric. 1 : P1
8.CA.10EhrleiteCa4Be3Zn2(PO4)6 · 9H2OTric. 1 : P1
8.CA.15FaheyiteBe2Mn2+Fe3+2(PO4)4 · 6H2OTrig. 3 2 : P31 2 1
8.CA.20MccrillisiteNaCs(Be,Li)Zr2(PO4)4 · 1-2H2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.CA.20SelwyniteNaK(Be,Al)Zr2(PO4)4 · 2H2OTet.
8.CA.25PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
8.CA.30HopeiteZn3(PO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.CA.30ArsenohopeiteZn3(AsO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.CA.35WarikahniteZn3(AsO4)2 · 2H2OTric.
8.CA.40PhosphophylliteZn2Fe(PO4)2 · 4H2OMon. 2/m : P21/b
8.CA.45ParascholziteCaZn2(PO4)2 · 2H2OMon.
8.CA.45ScholziteCaZn2(PO4)2 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbcm
8.CA.50KeyiteCu2+3Zn4Cd2(AsO4)6 · 2H2OMon. 2/m
8.CA.55PushcharovskiteK0.6Cu18(AsO4)(HAsO4)10(H2AsO4)4(OH)9.6·18.6H2OTric.
8.CA.60ProsperiteCa2Zn4(AsO4)4 · H2OMon.
8.CA.65GengenbachiteKFe3+3(HPO4)4(H2PO4)2 · 6H2OTrig. 3m : P3 1c
8.CA.70ParahopeiteZn3(PO4)2 · 4H2OTric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

40.5.4.KaňkiteFeAsO4 · 3.5H2OMon. 2 : P2
40.5.4.2MccrillisiteNaCs(Be,Li)Zr2(PO4)4 · 1-2H2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
40.5.4.3SelwyniteNaK(Be,Al)Zr2(PO4)4 · 2H2OTet.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.3.1MoraesiteBe2(PO4)(OH) · 4H2OMon.
19.3.2BerylloniteNaBePO4Mon. 2/m : P21/b
19.3.3HurlbutiteCaBe2(PO4)2Mon.
19.3.4HydroxylherderiteCaBe(PO4)(OH,F)Mon. 2/m : P21/b
19.3.5GlucineCaBe4(PO4)2(OH)4 · 0.5H2O
19.3.6FransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2OMon.
19.3.7UraloliteCa2Be4(PO4)3(OH)3 · 5H2OMon.
19.3.9PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
19.3.10TiptopiteK2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2OHex.
19.3.12RoscheriteCa2Mn2+5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/m
19.3.13FaheyiteBe2Mn2+Fe3+2(PO4)4 · 6H2OTrig. 3 2 : P31 2 1
19.3.14FarringtoniteMg3(PO4)2Mon. 2/m
19.3.15HoltedahliteMg2(PO4)(OH)Trig. 3m : P3 1m
19.3.16AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
19.3.17NewberyiteMg(HPO4) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.3.18PhosphorrössleriteMg(HPO4) · 7H2OMon. 2/m : P2/b
19.3.19BobierriteMg3(PO4)2 · 8H2OMon. 2/m : B2/b
19.3.20Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
19.3.21Panethite(Na,Ca)2(Mg,Fe2+)2(PO4)2Mon. 2/m : P21/b
19.3.22Dittmarite(NH4)Mg(PO4) · H2OOrth.
19.3.23Struvite(NH4)Mg(PO4) · 6H2OOrth. mm2
19.3.24Hannayite(NH4)2Mg3H4(PO4)4 · 8H2OTric. 1 : P1

Fluorescence of GainesiteHide

In UV light:
Not fluorescent

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for GainesiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Moore, P. B., Araki, T., Steele, I. M., Swihart, G. H. and Kampf, A. R. (1983): Gainesite, sodium zirconium beryllophosphate: a new mineral and its crystal structure. Am. Mineral. 68, 1022-1028.
American Mineralogist: 80: 1074.
Foord, E. E., Brownfield, M. E., Lichte, F. E., Davis, A. M. and Sutley, S. J. (1994): Mccrillisite, NaCs(Be,Li)Zr2(PO4)4.1-2H2O, a new mineral species from Mount Mica, Oxford County, Maine, and new data for gainesite. Can. Mineral. 32, 839-42.

Internet Links for GainesiteHide

Localities for GainesiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
USA (TL)
 
  • Maine
    • Oxford Co.
      • Newry
Amer.Min.(1983) 68, 1022-1028; "Mineralogy of Maine, Vol. 1" by King, V.T. & Foord, E.E., Maine Geologic Survey, 1994
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