Metamunirite Mineral Data

General Metamunirite Information

Chemical Formula:

Na2[V+++++2O6] or NaVO3

Composition:

Molecular Weight = 243.86 gm

Sodium 18.85 % Na 25.42 % Na₂O

Vanadium 41.78 % V 74.58 % V₂O₅

Oxygen 39.37 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₂V⁵⁺₂O₆

IMA Status:

Approved IMA 1991

Locality:

Burro mine, near Slick Rock, San Miguel County, Colorado, USA. Link to MinDat.org Location Data.

Name Origin:

Named for its relationship to munirite.

Name Pronunciation:

Metamunirite + Pronunciation

Synonym:

ICSD 29450

IMA1990-044

PDF 32-1198

Metamunirite Image

Images:

Metamunirite

Comments: Colorless, acicular crystals of metamunirite.
Location: Burro Mine, Slick Rock District, San Miguel Co., Colorado, USA. Scale: Picture size 1.6 mm.
© Thomas Witzke / Abraxas-Verlag

Metamunirite Crystallography

Axial Ratios:

a:b:c =3.8744:1:1.4684

Cell Dimensions:

a = 14.134, b = 3.648, c = 5.357, Z = 4; V = 276.21 Den(Calc)= 5.86

Crystal System:

Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

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

By Intensity(I/I_o): 5.01(1), 2.954(0.35), 3.532(0.25),

Physical Properties of Metamunirite

Cleavage:

{???} Perfect

Color:

Colorless.

Diaphaneity:

Transparent

Hardness:

1 - Talc

Streak:

white

Optical Properties of Metamunirite

Gladstone-Dale:

CI calc= 0.553 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1348,KC= 0.3019
Ncalc = 2.77

Optical Data:

Biaxial (+), a=1.78, b=1.8, , 2V(Meas)=30-40.

Calculated Properties of Metamunirite

Electron Density:

Bulk Density (Electron Density)=5.58 gm/cc
note: Specific Gravity of Metamunirite =5.86 gm/cc.

Fermion Index:

Fermion Index = 0.0012334417
Boson Index = 0.9987665583

Photoelectric:

PE_Metamunirite= 8.37 barns/electron
U=PE_Metamunirite x rElectron Density= 46.64 barns/cc.

Radioactivity:

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

Metamunirite Classification

Dana Class:

47.01.03.02 (47)Vanadium Oxysalts

(47.01)(Normal VO3)

(47.01.03)Munirite Group

47.01.03.01 Munirite NaVO3•(2-x)(H2O) P 2₁/a 2/m

47.01.03.02 Metamunirite Na2[V2O6]orNaVO3 P nma 2/m 2/m 2/m

Strunz Class:

04.HD.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.H - V[5,6] Vanadates

04.HD -Inovanadates

04.HD.20 Metamunirite Na2[V2O6]orNaVO3 P nma 2/m 2/m 2/m

Other Metamunirite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.77,p1116,1992) OPTIC PROP.(Am.Min.,Vol.77,p1116,1992)

See Also:

Links to other databases for Metamunirite :
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 Metamunirite Specimen Label here :

Metamunirite

Na2[V+++++2O6] or NaVO3
Dana No: 47.01.03.02 Strunz No: 04.HD.20
Locality:

Notes:

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