Lenoblite Mineral Data

General Lenoblite Information

Chemical Formula:

V2O4•2(H2O)

Composition:

Molecular Weight = 201.91 gm

Vanadium 50.46 % V 82.16 % VO₂

Hydrogen 2.00 % H 17.84 % H₂O

Oxygen 47.54 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

V⁴⁺₂O₄•2(H₂O)

Environment:

From a uranium deposit associated with duttonite.

IMA Status:

Approved IMA 1970

Locality:

Mine Oklo, Mounana (near Franceville), Gabon. Link to MinDat.org Location Data.

Name Origin:

Named for Andre Lenoble, French mineralogist-geologist.

Name Pronunciation:

Lenoblite + Pronunciation

Lenoblite Image

Images:

Lenoblite

Comments: Yellow coating of lenoblite on uraninite.
Location: Mounana, Haut-Ogooue, Gabon. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Lenoblite Crystallography

Axial Ratios:

a:b:c =0.6213:1:3.0705

Cell Dimensions:

a = 2.995, b = 4.82, c = 14.8, Z = 2; V = 213.65 Den(Calc)= 3.14

Crystal System:

Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 2₁2₁2₁

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.59(1), 3.722(0.9), 2.528(0.8),

Physical Properties of Lenoblite

Color:

Azure, Greenish blue.

Optical Properties of Lenoblite

Optical Data:

NCalc= 2.2 - from Gladstone-Dale relationship (KC = 0.3835) where Ncalc=Dcalc*KC+1

Calculated Properties of Lenoblite

Electron Density:

Bulk Density (Electron Density)=3.05 gm/cc
note: Specific Gravity of Lenoblite =3.14 gm/cc.

Fermion Index:

Fermion Index = 0.0014926888
Boson Index = 0.9985073112

Photoelectric:

PE_Lenoblite= 9.59 barns/electron
U=PE_Lenoblite x rElectron Density= 29.22 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lenoblite is Not Radioactive

Lenoblite Classification

Dana Class:

04.04.17.01 (04)Simple Oxides

(04.04)with a cation charge of 4+ (A++++ O2)

(04.04.17)Dana Group

04.04.17.01 Lenoblite V2O4•2(H2O) P 2₁2₁2₁ 2 2 2

Strunz Class:

04.HG.60 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.60 Lenoblite V2O4•2(H2O) P 2₁2₁2₁ 2 2 2

Other Lenoblite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Lenoblite :
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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Ask about Lenoblite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Lenoblite Specimen Label here :

Lenoblite

V2O4•2(H2O)
Dana No: 04.04.17.01 Strunz No: 04.HG.60
Locality:

Notes: