Metarossite Mineral Data

Metarossite Mineral Data +

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General Metarossite Information

Chemical Formula:

CaV2O6·2(H2O)

Composition:

Molecular Weight = 273.99 gm

Calcium 14.63 % Ca 20.47 % CaO

Vanadium 37.19 % V 66.38 % V₂O₅

Hydrogen 1.47 % H 13.15 % H₂O

Oxygen 46.72 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaV⁵⁺₂O₆·2(H₂O)

Environment:

Coatins on sandstone.

IMA Status:

Valid Species (Pre-IMA) 1927

Locality:

Bull Pen Canyon, San Miguel County, Colorado, USA. Link to MinDat.org Location Data.

Name Origin:

Named as the dehydration procutc of rossite.

Synonym:

ICSD 40085

PDF 29-392

Metarossite Image

Images:

Metarossite

Comments: Light yellow metarossite on sandstone.
Location: Burro Mine, Slick Rock District, San Miguel Co., Colorado. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Metarossite

Comments: Bright yellow platy crystals to about 0.5mm covering sandstone matrix.
Location: Arrowhead Claim, San Miguel Co., Colorado, USA. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Metarossite Crystallography

Axial Ratios:

a:b:c =0.8796:1:1.0996

Cell Dimensions:

a = 6.215, b = 7.065, c = 7.769, Z = 2; alpha = 92.92°, beta = 96.65°, gamma = 105.78° V = 325.64 Den(Calc)= 2.79

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 5.926(1), 6.773(0.63), 5.034(0.58),

Crystal Structure:

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Kelsey C H , Barnes W H , The Canadian Mineralogist , 6 (1960) p.448-466, The crystal structure of metarossite, Locality: Thompson s, Utah, USA

Physical Properties of Metarossite

Color:

Yellow.

Density:

2.45

Hardness:

1-2 - Between Talc and Gypsum

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Pearly

Optical Properties of Metarossite

Gladstone-Dale:

CI meas= -0.103 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3035,KPDmeas= 0.3456,KC= 0.3134

Optical Data:

Biaxial (+), a=1.84, b=1.85, g=1.85, bire=0.0100, 2V(Calc)=0, 2V(Meas)=70. Dispersion relatively strong.

Calculated Properties of Metarossite

Electron Density:

r_electron=2.73 gm/cc
note: r_Metarossite=2.79 gm/cc.

Fermion Index

Fermion Index = 0.00135
Boson Index = 0.99865

Photoelectric:

PE_Metarossite= 8.87 barns/electron
U=PE_Metarossite x r_electron= 24.20 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Metarossite is Not Radioactive

Metarossite Classification

Dana Class:

47.1.1.2 (47)Vanadium Oxysalts

(47.1)(Normal VO3)

(47.1.1)Dana Group

47.1.1.1 Rossite CaV2O6·4(H2O) P1 1

47.1.1.2 Metarossite CaV2O6·2(H2O) P1 1

47.1.1.3 Ansermetite! MnV2O6·4(H2O) C 2/m 2/m

Strunz Class:

IV/G.07-60 IV - Oxides

IV/G - Vanadiumoxides (with V4+/5+) Chain vanadates with [V2O6]2-

IV/G.07 - Navajoite-Metadelrioite series

IV/G.07-10 Navajoite V2O5·3(H2O) C 2/m 2/m

IV/G.07-15 Ankinovichite! (Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5 P 2₁/n 2/m

IV/G.07-20 Alvanite (Zn,Ni)Al4(VO3)2(OH)12·2(H2O) P 2₁/n 2/m

IV/G.07-30 Munirite NaVO3·(2-x)(H2O) P 2₁/a 2/m

IV/G.07-40 Metamunirite Na2[V2O6]orNaVO3 P nma 2/m 2/m 2/m

IV/G.07-45 Dickthomssenite! Mg(V2O6)·7(H2O) C 2/c 2/m

IV/G.07-48 Ansermetite! MnV2O6·4(H2O) C 2/m 2/m

IV/G.07-50 Rossite CaV2O6·4(H2O) P1 1

IV/G.07-60 Metarossite CaV2O6·2(H2O) P1 1

IV/G.07-70 Delrioite CaSrV2O6(OH)2·3(H2O) I/a or I2/a 2/m

IV/G.07-80 Metadelrioite CaSrV2O6(OH)2·(H2O) P1 1

Other Metarossite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Metarossite :
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 - WWW-MINCRYST 13 -École des Mines de Paris

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Metarossite

CaV2O6·2(H2O)
Dana No: 47.1.1.2 Strunz No: IV/G.07-60
Locality:

Notes: