Gainesite Mineral Data (original) (raw)

General Gainesite Information

Help on Chemical Formula: Chemical Formula:

Na2Zr2Be(PO4)4•1-2(H2O)

Help on Composition: Composition:

Molecular Weight = 639.49 gm

Cesium 2.08 % Cs 2.20 % Cs2O

Potassium 1.83 % K 2.21 % K2O

Sodium 5.75 % Na 7.75 % Na2O

Lithium 0.11 % Li 0.23 % Li2O

Calcium 0.63 % Ca 0.88 % CaO

Zirconium 24.25 % Zr 32.76 % ZrO2

Beryllium 0.85 % Be 2.35 % BeO

Iron 0.87 % Fe 1.12 % FeO

Phosphorus 19.37 % P 44.39 % P2O5

Hydrogen 0.47 % H 4.23 % H2O

Oxygen 43.78 % O

______ ______

100.00 % 98.12 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Na1.6K0.3Cs0.1Be0.6Li0.1Zr1.7Fe2+0.1Ca0.1(PO4)4�1.5(H2O)

Help on Environment: Environment:

Accessory mineral in a granite pegmatite.

Help on IMA Status: IMA Status:

Approved IMA 1983

Help on Locality: Locality:

Nevel quarry, Newry, Oxford County, Maine, USA. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Richard Venable Gaines (1917-1999), American mineralogist, economic geologist, and mineral collector of Earlysville, Virginia, USA, for his interest in beryllium minerals.

Help on Name Pronunciation: Name Pronunciation:

Gainesite + Pronunciation Say GAINESITE

Help on Synonym: Synonym:

ICSD 31199

PDF 35-604

Gainesite Image

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Gainesite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:2.60682

Help on Cell Dimensions: Cell Dimensions:

a = 6.567, c = 17.119, Z = 2; V = 738.27 Den(Calc)= 2.88

Help on Crystal System: Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 41/amd

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 6.068(1), 3.265(0.9), 3.023(0.5),

Click Here for Large Gainesite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Help on Above

| | Moore P B , Araki T , Steele I M , Swihart G H , Kampf A R , American Mineralogist , 68 (1983) p.1022-1028, Gainesite, sodium zirconium beryllophosphate: A new mineral and its crystal, structure | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Gainesite

Help on Color: Color:

Blue.

Help on Density: Density:

2.94

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Fracture: Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Help on Habit: Habit:

Pyramidal - Crystals are shaped like pyramids.

Help on Hardness: Hardness:

4 - Fluorite

Help on Luster: Luster:

Vitreous (Glassy)

Optical Properties of Gainesite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.079 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.101 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2167,KPDmeas= 0.2122,KC= 0.1967
Ncalc = 1.57 - 1.58

Help on Optical Data: Optical Data:

Uniaxial (+), w=1.618, e=1.63, bire=0.0120.

Calculated Properties of Gainesite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.82 gm/cc
note: Specific Gravity of Gainesite =2.94 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Help on Photoelectric: Photoelectric:

PEGainesite = 42.30 barns/electron
U=PEGainesite x relectron= 119.44 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 25.43 (Gamma Ray American Petroleum Institute Units)
Concentration of Gainesite per GRapi unit = 3.93 (%)

Estimated Radioactivity from Gainesite - barely detectable

Gainesite Classification

Help on Dana Class: Dana Class:

40.05.04.01 (40)Hydrated Phosphates, etc

(40.05)with miscellaneous formulae

(40.05.04)Gainesite Group

40.05.04.01 Gainesite Na2Zr2Be(PO4)4•1-2(H2O) I 41/amd 4/m 2/m 2/m

40.05.04.02 Mccrillisite NaCs(Be,Li)Zr2(PO4)4•1-2(H2O) I 41/amd 4/m 2/m 2/m

40.05.04.03 Selwynite NaK(Be,Al)Zr2(PO4)4•2(H2O) I 41/amd 4/m 2/m 2/m

Help on Strunz Class: Strunz Class:

08.CA.20 08 - PHOSPHATES, ARSENATES, VANADATES

08.C - Phosphates without Additional Anions, with H2O

08.CA -With small and large/medium cations

08.CA.20 Gainesite Na2Zr2Be(PO4)4•1-2(H2O) I 41/amd 4/m 2/m 2/m

08.CA.20 Mccrillisite NaCs(Be,Li)Zr2(PO4)4•1-2(H2O) I 41/amd 4/m 2/m 2/m

08.CA.20 Selwynite NaK(Be,Al)Zr2(PO4)4•2(H2O) I 41/amd 4/m 2/m 2/m

Other Gainesite Information

Help on References: References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Gainesite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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Ask about Gainesite here :
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Print or Cut-and-Paste your Gainesite Specimen Label here :

Gainesite

Na2Zr2Be(PO4)4•1-2(H2O)
Dana No: 40.05.04.01 Strunz No: 08.CA.20
Locality:

Notes: