Mineralogy Database

Rossite Mineral Data

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General Rossite Information

Help on Chemical  Formula: Chemical Formula: CaV2O6•4(H2O)
Help on Composition: Composition: Molecular Weight = 310.02 gm
   Calcium   12.93 %  Ca   18.09 % CaO
   Vanadium  32.86 %  V    58.67 % V2O5
   Hydrogen   2.60 %  H    23.24 % H2O
   Oxygen    51.61 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaV5+2O6•4(H2O)
Help on Environment: Environment: In veinlets in carnotite-bearing sandstone.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1927
Help on Locality: Locality: M.E. O�Neil�s [Buckhorn] claim, Bull Pen Canyon, and at the Burro and Deremo-Snyder mines, Slick Rock district, San Miguel Co., Colorado Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Clarence Samuel Ross (1880-1975), American geologist and mineralogist, U.S. Geological Survey, Washington, D.C., USA.
Help on Name Pronunciation: Name Pronunciation: Rossite Say ROSSITE
Help on Synonym: Synonym: ICSD 17001
  PDF 42-590

Rossite Image

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Comments: Scaly crystalline rossite on silty sandstone.
Location: Buckhorn Mine, San Miguel County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rossite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2159:1:1.2202
Help on Cell Dimensions: Cell Dimensions: a = 8.53, b = 7.015, c = 8.56, Z = 2; alpha = 78.38°, beta = 103.38°, gamma = 65.3° V = 443.44 Den(Calc)= 2.32
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 0) ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Rossite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Yellow.
Help on Density: Density: 2.45
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly

Optical Properties of Rossite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3196,KPDmeas= 0.3156,KC= 0.3165
Ncalc = 1.77 - 1.78
Help on Optical Data: Optical Data: Biaxial (-), a=1.71, b=1.77, g=1.84, bire=0.1300, 2V(Calc)=90, 2V(Meas)=70. Dispersion relatively strong.

Calculated Properties of Rossite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.43 gm/cc
note: Specific Gravity of Rossite =2.45 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0012477301
Boson Index = 0.9987522699
Help on Photoelectric: Photoelectric: PERossite = 7.76 barns/electron
U=PERossite x rElectron Density= 18.89 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rossite is Not Radioactive

Rossite Classification

Help on  Dana Class: Dana Class: (47)Vanadium Oxysalts
  (47.01)(Normal VO3)
  (47.01.01)Rossite Group Rossite CaV2O6•4(H2O) P1 1 Metarossite CaV2O6•2(H2O) P1 1 Ansermetite! MnV2O6•4(H2O) C 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.HD.05 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.05 Rossite CaV2O6•4(H2O) P1 1

Other Rossite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Rossite :
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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Dana No: Strunz No: 04.HD.05





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