Navajoite Mineral Data

General Navajoite Information

Chemical Formula:

V2O5•3(H2O)

Composition:

Molecular Weight = 235.93 gm

Vanadium 43.18 % V 77.09 % V₂O₅

Hydrogen 2.56 % H 22.91 % H₂O

Oxygen 54.25 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

V⁵⁺₂O₅•3(H₂O)

Environment:

Highly oxidized portion of a Colorado Plateau-type U-V deposit.

IMA Status:

Valid Species (Pre-IMA) 1955

Locality:

Monument No. 2 mine, Monument Valley, Apache Co., Arizona, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the Navajo Indians, on whose reservation the mineral was first found.

Name Pronunciation:

Navajoite + Pronunciation

Navajoite Image

Images:

Navajoite

Comments: Purple-brown adamantine navajoite coatings on conglomerate.
Location: Monument #2 Mine, Monument Valley, Apache County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Navajoite Crystallography

Axial Ratios:

a:b:c =9.7136:1:3.2777

Cell Dimensions:

a = 34.94, b = 3.597, c = 11.79, Z = 10; beta = 95.98° V = 1,473.69 Den(Calc)= 2.66

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/I_o): 12.1(1), 10.6(0.6), 2.9(0.5),

Physical Properties of Navajoite

Cleavage:

None

Color:

Dark brown.

Density:

2.56

Diaphaneity:

Opaque

Hardness:

1.5 - Between Talc and Gypsum

Luster:

Adamantine

Streak:

brown

Optical Properties of Navajoite

Gladstone-Dale:

CI meas= -0.106 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.064 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3618,KPDmeas= 0.376,KC= 0.34
Ncalc = 1.87 - 1.9

Optical Data:

Biaxial (?), a=1.905, b=2.02,

Calculated Properties of Navajoite

Electron Density:

Bulk Density (Electron Density)=2.62 gm/cc
note: Specific Gravity of Navajoite =2.66 gm/cc.

Fermion Index:

Fermion Index = 0.0013438644
Boson Index = 0.9986561356

Photoelectric:

PE_Navajoite= 8.16 barns/electron
U=PE_Navajoite x rElectron Density= 21.35 barns/cc.

Radioactivity:

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

Navajoite Classification

Dana Class:

04.06.02.01 (04)Simple Oxides

(04.06)not classified

(04.06.02)Dana Group

04.06.02.01 Navajoite V2O5•3(H2O) C 2/m 2/m

Strunz Class:

04.HG.30 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.30 Navajoite V2O5•3(H2O) C 2/m 2/m

Other Navajoite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Navajoite :
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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Print or Cut-and-Paste your Navajoite Specimen Label here :

Navajoite

V2O5•3(H2O)
Dana No: 04.06.02.01 Strunz No: 04.HG.30
Locality:

Notes:

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