Mineralogy Database

Hendersonite Mineral Data

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General Hendersonite Information

Help on Chemical  Formula: Chemical Formula: Ca1.3V6O16•6(H2O)
Help on Composition: Composition: Molecular Weight = 721.83 gm
   Calcium    7.22 %  Ca   10.10 % CaO
   Vanadium  42.34 %  V    75.59 % V2O5
   Hydrogen   1.68 %  H    14.97 % H2O
   Oxygen    48.76 %  O
            ______        ______ 
            100.00 %      100.66 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.3V5+6O16•6(H2O)
Help on Environment: Environment: Sandstone-hosted uranium-vanadium deposits.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Eastside mines in San Juan County, New Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Edward P. Henderson of the U.S. National Museum, in recognition of his mineralogical studies of the vanadium-uranium deposits of the Colorado Plateau.
Help on Name Pronunciation: Name Pronunciation: Hendersonite + Pronunciation Say HENDERSONITE

Hendersonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.454:1:5.2701
Help on Cell Dimensions: Cell Dimensions: a = 12.4, b = 3.59, c = 18.92, Z = 2; V = 842.24 Den(Calc)= 2.85
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnam
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.45(1), 3.113(0.36), 4.7(0.16),

Physical Properties of Hendersonite

Help on Color: Color: Greenish black, Black.
Help on Density: Density: 2.77 - 2.79, Average = 2.78
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Adamantine - Pearly
Help on Streak: Streak: brownish green

Optical Properties of Hendersonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.166 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.137 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3743,KPDmeas= 0.3837,KC= 0.3291
Ncalc = 1.91 - 1.94
Help on Optical Data: Optical Data: Biaxial (-), a=2, b=2.1, g=2.1, bire=0.1000, 2V(Calc)=0, 2V(Meas)=medium.
Help on Pleochroism (x): Pleochroism (x): green.
Help on Pleochroism (y): Pleochroism (y): brownish green.
Help on Pleochroism (z): Pleochroism (z): brown.

Calculated Properties of Hendersonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.78 gm/cc
note: Specific Gravity of Hendersonite =2.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0013926048
Boson Index = 0.9986073952
Help on Photoelectric: Photoelectric: PEHendersonite = 8.94 barns/electron
U=PEHendersonite x rElectron Density= 24.85 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hendersonite is Not Radioactive

Hendersonite 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.50 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.50 Hendersonite Ca1.3V6O16•6(H2O) Pnam 2/m 2/m 2/m

Other Hendersonite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Hendersonite :
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 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 04.HG.50





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