Krasnoselskite Mineral Data

General Krasnoselskite Information

Chemical Formula:

CoWO4

Composition:

Molecular Weight = 306.78 gm

Cobalt 19.21 % Co 24.43 % CoO

Tungsten 59.93 % W 75.57 % WO₃

Oxygen 20.86 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Co(WO₄)

Environment:

Occur as pseudomorphs after hard alloy VK8 (92o/oW C,80/oCo) on the plates of the cutting element of a drilling machine found in burned rocks. .An inadequately described cobalt anal og of scheelite.

IMA Status:

Not Submitted IMA

Locality:

Krasnoselskaya mine in Krasnogorsk, Chelyabinsk basin, Ural Mountains, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 15851

PDF 15-867

Krasnoselskite Crystallography

Axial Ratios:

a:b:c =0.8714:1:0.8276

Cell Dimensions:

a = 4.95, b = 5.68, c = 4.701, Z = 2; beta = 90° V = 132.17 Den(Calc)= 7.71

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/c

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

By Intensity(I/I_o): 2.916(0.77), 3.739(0.41), 3.611(0.23),

Physical Properties of Krasnoselskite

Color:

Gray, Bluish gray, Greenish gray.

Density:

6.62

Fracture:

Conchoidal - Irregular - Irregular fracture producing small, conchoidal fragments.

Habit:

Pseudomorphous - Occurs in the form of another mineral.

Hardness:

4 - Fluorite

Luster:

Earthy (Dull)

Streak:

bluish gray

Optical Properties of Krasnoselskite

Optical Data:

NCalc= 2.33 - from Gladstone-Dale relationship (KC = 0.173) where Ncalc=Dcalc*KC+1
NCalc= 2.14 - from Gladstone-Dale relationship (KC = 0.173) where Ncalc=Dmeas*KC+1

Calculated Properties of Krasnoselskite

Electron Density:

Bulk Density (Electron Density)=6.69 gm/cc
note: Specific Gravity of Krasnoselskite =7.71 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_{Krasnoselskite}= 753.01 barns/electron
U=PE_{Krasnoselskite} x rElectron Density=5,033.93 barns/cc.

Radioactivity:

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

Krasnoselskite Classification

Dana Class:

37.00.00.00 (37)Phosphate Minerals

(37.00)Without Dana Classification Numbers

(37.00.00)Wolframate

37.00.00.00 Arnhemite* (K,Na)2Mg2(P2O7)•5(H2O) Unk Hex

37.00.00.00 Arsenowaylandite* BiAl3(AsO4)2(OH)6 R 3m 3 2/m

37.00.00.00 Auroantimonate* AuSbO3 Ortho ? Ortho

37.00.00.00 Barium-zinc-alumopharmacosiderite* (Ba,K)0.5(Zn,Cu)0.5(Al,Fe)4(AsO4)3•5(H2O) I 42m 4 2m

37.00.00.00 Chernovite-(Ce)* (Ce,Y)(AsO4) I 4₁/amd 4/m 2/m 2/m

37.00.00.00 Churchite-(Dy)* (Dy,Sm,Gd,Nd)(PO4)•2(H2O) Mono

37.00.00.00 Gengenbachite KFe3(H2PO4)2(HPO4)4•6H2OorKFe3H8(PO4)6•6H2O P 6₃mc 6mm

37.00.00.00 IMA2008-063 Pb[Zn0.25,[]0.75]Fe3H(AsO4)2(OH)6 C 2/c 2/m

37.00.00.00 IMA2009-005 (Y,Ca,REE)5[(Si,P)O4]3F P 6₃/m 6/m 2/m 2/m

37.00.00.00 IMA2009-016 Cu4H(AsO4)2(OH)3•H2O P1 1

37.00.00.00 Kerstenite? PbSeO4(?) P nma 2/m 2/m 2/m

37.00.00.00 Krasnoselskite* CoWO4 P 2/c 2/m

37.00.00.00 Laubmannite? Fe3Fe6(PO4)4(OH)12 Unk Ortho

37.00.00.00 Oxiberaunite* (Fe,Mn)Fe5(PO4)4O(OH)4•6(H2O) Mono

37.00.00.00 Parwanite (Na,K)(Mg,Ca)4Al8(PO4)8(CO3)(OH)7•30H2O P 2, Pm, P 2/m, P 2₁, Mono

37.00.00.00 Pyrocoproite* (Mg(K,Na))2P2O7 Unk Mono

37.00.00.00 Pyrophosphite* K2CaP2O7 P 2₁/n 2/m

37.00.00.00 Zinclavendulan? NaCa(Zn,Cu)5(AsO4)4Cl•4-5(H2O) Unk Ortho

Strunz Class:

04.DB.30 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.30 Ferberite FeWO4 P 2/c 2/m

04.DB.30 Hubnerite MnWO4 P 2/c 2/m

04.DB.30 Krasnoselskite* CoWO4 P 2/c 2/m

04.DB.30 Sanmartinite (Zn,Fe)WO4 P 2/c 2/m

04.DB.30 Wolframoixiolite* (Fe,Mn,Nb)(Nb,W,Ta)O4 Pc m

04.DB.30 Wolframite* (Fe,Mn)WO4 P 2/c 2/m

04.DB.30 Heftetjernite! ScTaO4 P 2/c 2/m

Other Krasnoselskite Information

References:

PHYS. PROP.(37th List of New Min.,Min. Mag.,1996)

See Also:

Links to other databases for Krasnoselskite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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

Krasnoselskite

CoWO4
Dana No: 37.00.00.00 Strunz No: 04.DB.30
Locality:

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