Scheteligite Mineral Data

General Scheteligite Information

Chemical Formula:

(Ca,Y,Sb,Mn)2(Ti,Ta,Nb,W)2O6(O,OH)

Composition:

Molecular Weight = 424.56 gm

Calcium 10.38 % Ca 14.53 % CaO

Yttrium 8.38 % Y 10.64 % Y₂O₃

Tantalum 21.31 % Ta 26.02 % Ta₂O₅

Titanium 13.53 % Ti 22.58 % TiO₂

Manganese 2.59 % Mn 3.34 % MnO

Niobium 4.38 % Nb 6.26 % Nb₂O₅

Antimony 8.60 % Sb 10.30 % Sb₂O₃

Hydrogen 0.12 % H 1.06 % H₂O

Tungsten 4.33 % W 5.46 % WO₃

Oxygen 26.38 % O

______ ______

100.00 % 100.19 % = TOTAL OXIDE

Empirical Formula:

Ca_1.1Y_0.4Sb_0.3Mn²⁺_0.2Ti_1.2Ta_0.5Nb_0.2W_0.1O_6.5(OH)_0.5

Environment:

A questionable mineral.

IMA Status:

Discredited IMA 1977

Locality:

Torvelona, Iveland, Norway. Link to MinDat.org Location Data.

Name Origin:

Named in 1937 for Jacob Schetelig (1875-1935), Norwegian mineralogist, director of the Oslo Mineralogical Museum.

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Scheteligite Crystallography

Crystal System:

OrthorhombicSpace Group: Unk

Physical Properties of Scheteligite

Color:

Black.

Density:

4.74

Diaphaneity:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

5.5 - Knife Blade

Luster:

Adamantine

Optical Properties of Scheteligite

Gladstone-Dale:

CI meas= 0.053 (Good) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2215,KC= 0.2338
Ncalc = 2.11

Optical Data:

Biaxial (?), b=2.05

Calculated Properties of Scheteligite

Electron Density:

Bulk Density (Electron Density)=4.31 gm/cc
note: Specific Gravity of Scheteligite =4.74 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Scheteligite= 342.85 barns/electron
U=PE_Scheteligite x rElectron Density=1,476.76 barns/cc.

Radioactivity:

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

Scheteligite Classification

Dana Class:

08.02.06.01 (08)Multiple Oxides with Nb, Ta, and Ti

(08.02)where (A)2 (B2O6) (O,OH,F)

(08.02.06)Dana Group

08.02.06.01 Scheteligite? (Ca,Y,Sb,Mn)2(Ti,Ta,Nb,W)2O6(O,OH) Unk Ortho

Strunz Class:

04.XX.00 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.X - Unclassified Strunz OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, telluri

04.XX -Oxide, Basic Hydrated

04.XX.00 Ashanite? (Nb,Ta,U,Fe,Mn)4O8 Pcan 2/m 2/m 2/m

04.XX.00 Methane hydrate-I! 46(H2O)•2(S)•6(L) P m3n 4/m 3 2/m

04.XX.00 Clinobirnessite* Na4Mn14O27•9(H2O) Mono

04.XX.00 Chubutite* Pb7O6Cl2 Unk Ortho

04.XX.00 Kleberite* FeTi6O13•4(H2O)(?) P 6₃mcm ? 6mm

04.XX.00 Hongquiite* TiO F m3m 4/m 3 2/m

04.XX.00 Psilomelane? (Ba,H2O)2Mn5O10 A2/m 2/m

04.XX.00 Struverite? (Ti,Ta,Fe)O2 P 4/mnm 4/m 2/m 2/m

04.XX.00 Ungursaite* NaCa5(Ta,Nb)24O65(OH) P 6₃/m,P 6₃ Hex

04.XX.00 Uhligite? Ca3(Ti,Al,Zr)9O20 Unk Cubic

04.XX.00 Scheteligite? (Ca,Y,Sb,Mn)2(Ti,Ta,Nb,W)2O6(O,OH) Unk Ortho

04.XX.00 Allendeite! Sc4Zr3O12 R 3 3

04.XX.00 IMA2000-016! (Ti,Fe,Mg,Mn)1-xTi2O5 Pban 2/m 2/m 2/m

04.XX.00 Methane hydrate-II! 136(H2O)•16(S)•8(L) F d3m 4/m 3 2/m

04.XX.00 IMA2000-026! (Mn,Li)4(Ta,Sn)4(Ta,Nb)8O32 C 2/c 2/m

04.XX.00 Methane hydrate-H! 34(H2O)•3(S)•2(M)•1(L) P 6/mmm 6/m 2/m 2/m

Other Scheteligite Information

References:

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

See Also:

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

Scheteligite

(Ca,Y,Sb,Mn)2(Ti,Ta,Nb,W)2O6(O,OH)
Dana No: 08.02.06.01 Strunz No: 04.XX.00
Locality:

Notes: