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Grantsite Mineral Data

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General Grantsite Information

Help on Chemical  Formula: Chemical Formula: Na4CaxV++++2xV+++++12-2xO32•8(H2O)
Help on Composition: Composition: Molecular Weight = 1,379.40 gm
   Sodium     6.67 %  Na    8.99 % Na2O
   Calcium    1.45 %  Ca    2.03 % CaO
   Vanadium  44.32 %  V     6.01 % VO2 / 72.52 % V2O5
   Hydrogen   1.17 %  H    10.45 % H2O
   Oxygen    46.40 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4Ca0.5V4+V5+11O32•8(H2O)
Help on Environment: Environment: Sandstone-hosted uranium-vanadium deposits.
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: F-33 mine (T12N-R9W Sec 33) 10 km NE of Grants, Valencia County, New Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the town of Grants, New Mexico.
Help on Name Pronunciation: Name Pronunciation: Grantsite + Pronunciation Say GRANTSITE

Grantsite Image

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  Grantsite   Tyuyamunite

Comments: Dark olive green waxy coatings of grantsite with greenish-yellow tyuyamunite and sandstone.
Location: F-33 Mine, near Grants, Valencia County, New Mexico, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Grantsite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =4.8736:1:3.4472
Help on Cell Dimensions: Cell Dimensions: a = 17.545, b = 3.6, c = 12.41, Z = 1; beta = 95.25° V = 780.55 Den(Calc)= 2.93
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.74(1), 3.61(0.3), 12.4(0.18),

Physical Properties of Grantsite

Help on Color: Color: Green black, Dark green, Olive green.
Help on Density: Density: 2.94
Help on Fracture: Fracture: Elastic - Fragments which spring back after bending.
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Luster: Luster: Silky
Help on Streak: Streak: brownish green

Optical Properties of Grantsite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.147 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.144 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2799,KPDmeas= 0.2789,KC= 0.3271
Ncalc = 1.96
Help on Optical Data: Optical Data: Biaxial (-), a=1.82

Calculated Properties of Grantsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.83 gm/cc
note: Specific Gravity of Grantsite =2.93 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0013519693
Boson Index = 0.9986480307
Help on Photoelectric: Photoelectric: PEGrantsite = 8.76 barns/electron
U=PEGrantsite x rElectron Density= 24.78 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Grantsite is Not Radioactive

Grantsite Classification

Help on  Dana Class: Dana Class: (47)Vanadium Oxysalts
  (47.03.01)Hewettite Group Hewettite CaV6O16•9(H2O) P 2/m 2/m Metahewettite CaV6O16•3(H2O) A2/m 2/m Barnesite Na2V6O16•3(H2O) P 2/m 2/m Hendersonite Ca1.3V6O16•6(H2O) Pnam 2/m 2/m 2/m Grantsite Na4CaxV2xV12-2xO32•8(H2O) C 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.HG.55 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.H - V[5,6] Vanadates
  04.HG -Unclassified V oxides
04.HG.55 Grantsite Na4CaxV2xV12-2xO32•8(H2O) C 2/m 2/m

Other Grantsite Information

Help on References: References: NAME( MinRec) 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 Grantsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 04.HG.55





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