Lenoblite Mineral Data

Lenoblite Mineral Data +

Excalibur Minerals

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.

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:

r_electron=3.05 gm/cc
note: r_Lenoblite=3.14 gm/cc.

Fermion Index

Fermion Index = 0.00149
Boson Index = 0.99851

Photoelectric:

PE_Lenoblite= 9.59 barns/electron
U=PE_Lenoblite x r_electron= 29.22 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lenoblite is Not Radioactive

Lenoblite Classification

Dana Class:

4.4.17.1 (4)Simple Oxides

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

(4.4.17)Dana Group

4.4.17.1 Lenoblite V2O4·2(H2O) P 2₁2₁2₁ 2 2 2

Strunz Class:

IV/G.08-40 IV - Oxides

IV/G - Vanadiumoxides (with V4+/5+) Layered vanadates

IV/G.08 - Heggite - Lenoblite series

IV/G.08-10 Haggite V2O2(OH)3 C 2/m 2/m

IV/G.08-20 Doloresite H8V6O16 C 2/m 2/m

IV/G.08-30 Duttonite VO(OH)2 I2/c 2/m

IV/G.08-40 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

Search for Lenoblite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Lenoblite :

AA Mineral Specimens

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

MineralsWeb Fine Minerals

Rockshop.cz

T G Fine Minerals

Wrights Rock Shop

Translate Lenoblite Mineral Data :

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: 4.4.17.1 Strunz No: IV/G.08-40
Locality:

Notes: