Montroseite Mineral Data

Montroseite Mineral Data
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General Montroseite Information

Help on Chemical Formula: Chemical Formula: (V+++,Fe+++,V++++)O(OH)
Help on Composition: Composition: Molecular Weight = 85.42 gm
   Vanadium  41.75 %  V    52.64 % V2O3 / 10.65 % V2O5
   Iron      19.61 %  Fe   25.23 % FeO
   Hydrogen   1.18 %  H    10.55 % H2O
   Oxygen    37.46 %  O
            ______        ______ 
            100.00 %       99.06 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: V3+0.6Fe2+0.3V5+0.1O(OH)
Help on Environment: Environment: In relatively unoxidized Colorado Plateau-type U-V ores in sandstones.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1953
Help on Locality: Locality: Bitter Creek, Jo Dandy, Whitney, and Virgin mines, Uravan district, Montrose County, Colorado, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Name Pronunciation: Name Pronunciation: Montroseite + Pronunciation Say MONTROSEITE
Help on Synonym: Synonym: ICSD 22302
  PDF 11-152
 

Montroseite Image

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Montroseite

Comments: Black silky fibrous montroseite on sandstone with tyuyamunite.
Location: Monument No. 2 Mine, Kayenta, Apache County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Montroseite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.5084:1:0.309
Help on Cell Dimensions: Cell Dimensions: a = 4.82, b = 9.48, c = 2.93, Z = 4; V = 133.88 Den(Calc)= 4.24
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.644(1), 4.31(1), 3.38(0.8),
Click Here for Large Montroseite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Evans H T , Block S , American Mineralogist , 38 (1953) p.1242-1250, The crystal structure of montroseite, a vanadium member of the diaspore group

View Additional jPOWD Structure files for Montroseite
[1]
 

Physical Properties of Montroseite

Help on Cleavage: Cleavage: {010} Good, {110} Good
Help on Color: Color: Black, Grayish black.
Help on Density: Density: 4
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 5.5-6.5 - Knife Blade-Pyrite
Help on Luster: Luster: Sub Metallic
Help on Streak: Streak: black
 

Optical Properties of Montroseite

Help on Optical Data: Optical Data: Biaxial (?)
  NCalc= 2.13 - from Gladstone-Dale relationship (KC = 0.2664) where Ncalc=Dcalc*KC+1
NCalc= 2.07 - from Gladstone-Dale relationship (KC = 0.2664) where Ncalc=Dmeas*KC+1
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Montroseite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   16.60   18.70 
   
 420 nm   15.80   18.00 
 440 nm   15.00   17.30 
 460 nm   14.60   17.00 
 480 nm   14.40   16.80 
 500 nm   14.30   16.60 
 520 nm   14.40   16.70 
 540 nm   14.60   16.80 
 560 nm   14.90   16.90 
 580 nm   15.10   17.10 
 600 nm   15.50   17.40 
 620 nm   15.80   17.80 
 640 nm   16.20   18.20 
 660 nm   16.60   18.70 
 680 nm   17.00   19.20 
 700 nm   17.50   19.80 
Calculated Relative Intensity Colors of Montroseite in Air
Relative
Intensity		    0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540% 600%
R1                        
R2                        
 

Calculated Properties of Montroseite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.06 gm/cc
note: Specific Gravity of Montroseite =4.24 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0053833499
Boson Index = 0.9946166501
Help on Photoelectric: Photoelectric: PEMontroseite = 13.95 barns/electron
U=PEMontroseite x rElectron Density= 56.64 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Montroseite is Not Radioactive
 

Montroseite Classification
Help on Dana Class: Dana Class: 06.01.01.04 (06)Hydroxides and Oxides Containing Hydroxyl
  (06.01)where X+++O OH
  (06.01.01)Diaspore group (Orthorhombic, Pnma or Pnmd)
 
06.01.01.01 Diaspore AlO(OH) Pbnm 2/m 2/m 2/m
 
06.01.01.02 Goethite FeO(OH) Pbnm 2/m 2/m 2/m
 
06.01.01.03 Groutite MnO(OH) Pbnm 2/m 2/m 2/m
 
06.01.01.04 Montroseite (V,Fe,V)O(OH) Pbnm 2/m 2/m 2/m
 
06.01.01.05 Bracewellite CrO(OH) Pbnm 2/m 2/m 2/m
 
06.01.01.06 Tsumgallite! GaO(OH) Pbnm 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 04.FD.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FD -Hydroxides with OH, without H2O; chains of edge-sharing octahedra
 
04.FD.10 Bracewellite CrO(OH) Pbnm 2/m 2/m 2/m
 
04.FD.10 Diaspore AlO(OH) Pbnm 2/m 2/m 2/m
 
04.FD.10 Guyanaite CrO(OH) Pnnm 2/m 2/m 2/m
 
04.FD.10 Groutite MnO(OH) Pbnm 2/m 2/m 2/m
 
04.FD.10 Goethite FeO(OH) Pbnm 2/m 2/m 2/m
 
04.FD.10 Montroseite (V,Fe,V)O(OH) Pbnm 2/m 2/m 2/m
 
04.FD.10 Tsumgallite! GaO(OH) Pbnm 2/m 2/m 2/m
 

Other Montroseite Information
Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Montroseite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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

Montroseite

(V+++,Fe+++,V++++)O(OH)
Dana No: 06.01.01.04 Strunz No: 04.FD.10
Locality:

 

Notes: