Paramontroseite Mineral Data

General Paramontroseite Information

Chemical Formula:

VO2

Composition:

Molecular Weight = 82.94 gm

Vanadium 61.42 % V 100.00 % VO₂

Oxygen 38.58 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

V⁴⁺O₂

Environment:

Relatively unoxidized Colorado Plateau-type U-V ores in sandstones, formed by dehydrogenation of montroseite

IMA Status:

Valid Species (Pre-IMA) 1955

Locality:

Bitter Creek mine, Colorado, USA. Link to MinDat.org Location Data.

Name Origin:

Named from the Greek for near, for its paramorphic relation to montroseite.

Name Pronunciation:

Paramontroseite + Pronunciation

Synonym:

ICSD 22303

PDF 25-1003

Paramontroseite Image

Images:

Paramontroseite

Comments: Black massive, radioactive paramontroseite.
Location: J.J. mine, Buell Canyon District, Montrose County, Colorado, USA. Scale: See Image.
© Rruff Database

Paramontroseite Crystallography

Axial Ratios:

a:b:c =0.5205:1:0.3094

Cell Dimensions:

a = 4.905, b = 9.422, c = 2.916, Z = 4; V = 134.76 Den(Calc)= 4.09

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/I_o): 3.39(1), 2.649(0.5), 4.35(0.35),

Crystal Structure:

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Evans H T , Mrose M E , American Mineralogist , 40 (1955) p.861-875, A crystal chemical study of montroseite and paramontroseite.

Physical Properties of Paramontroseite

Cleavage:

{010} Good

Color:

Black.

Density:

Diaphaneity:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Luster:

Sub Metallic

Streak:

black

Optical Properties of Paramontroseite

Optical Data:

NCalc= 2.61 - from Gladstone-Dale relationship (KC = 0.393) where Ncalc=Dcalc*KC+1
NCalc= 2.57 - from Gladstone-Dale relationship (KC = 0.393) where Ncalc=Dmeas*KC+1

Calculated Properties of Paramontroseite

Electron Density:

Bulk Density (Electron Density)=3.85 gm/cc
note: Specific Gravity of Paramontroseite =4.09 gm/cc.

Fermion Index:

Fermion Index = 0.0017206735
Boson Index = 0.9982793265

Photoelectric:

PE_{Paramontroseite}= 11.95 barns/electron
U=PE_{Paramontroseite} x rElectron Density= 45.98 barns/cc.

Radioactivity:

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

Paramontroseite Classification

Dana Class:

04.04.11.01 (04)Simple Oxides

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

(04.04.11)Dana Group

04.04.11.01 Paramontroseite VO2 Pbnm 2/m 2/m 2/m

Strunz Class:

04.DB.15a 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.D - Metal:Oxygen = 1:2 and similar

04.DB -With medium-sized cations; chains of edge-sharing octahedra

04.DB.15a Paramontroseite VO2 Pbnm 2/m 2/m 2/m

04.DB.15a Ramsdellite MnO2 Pbnm 2/m 2/m 2/m

Other Paramontroseite Information

References:

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

See Also:

Links to other databases for Paramontroseite :
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
15 - WWW-MINCRYST

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Ask about Paramontroseite here :
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Print or Cut-and-Paste your Paramontroseite Specimen Label here :

Paramontroseite

VO2
Dana No: 04.04.11.01 Strunz No: 04.DB.15a
Locality:

Notes: