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Squawcreekite Mineral Data

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General Squawcreekite Information

Help on Chemical  Formula: Chemical Formula: (Fe+++,Sb+++++,W++++++)O4•(H2O)
Help on Composition: Composition: Molecular Weight = 262.07 gm
   Iron      19.18 %  Fe   27.42 % Fe2O3
   Antimony  41.81 %  Sb   55.55 % Sb2O5
   Hydrogen   0.77 %  H     6.87 % H2O
   Tungsten   7.72 %  W     9.73 % WO3
   Oxygen    30.52 %  O
            ______        ______ 
            100.00 %       99.57 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+0.9Sb0.9W0.11O4•(H2O)
Help on Environment: Environment: Occurs adjacent to hematite-cassiterite veins in rhyolite and with cassiterite at Esperansa tin mine, near Durango, Mexico. Approved IMA 1988, Redefined to tripuhyite (IMA Code 02-A ).
Help on IMA Status: IMA Status: Discredited IMA 2002
Help on Locality: Locality: Type locality is Squaw Creek, Catron County, New Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in 1991after its locality.
Help on Name Pronunciation: Name Pronunciation: Squawcreekite + Pronunciation Say SQUAWCREEKITE
Help on Synonym: Synonym: Discredited IMA 2002

Squawcreekite Image

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  Squawcreekite   Tripuhyite

Comments: Micro red-orange squawcreekite crystals in matrix. The mineral is now considered to be a Zn-bearing variety of Tripuhyite.
Location: Squaw Creek Tin Mine, Catron County, New Mexico. Scale: Not Given.
© Diederik Visser

Squawcreekite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.66432
Help on Cell Dimensions: Cell Dimensions: a = 4.6673, c = 3.1006, Z = 1; V = 67.54 Den(Calc)= 6.44
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/mnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.3039(1), 2.5844(0.49), 1.7316(0.36),

Physical Properties of Squawcreekite

Help on Cleavage: Cleavage: {100} Imperfect
Help on Color: Color: Yellowish brown.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 6-6.5 - Orthoclase-Pyrite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: yellowish brown

Optical Properties of Squawcreekite

Help on Dichroism (e): Dichroism (e): pale yellow.
Help on Dichroism (w): Dichroism (w): medium yellow brown.
Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.096 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.191,KC= 0.2114
Ncalc = 2.36
Help on Optical Data: Optical Data: Uniaxial (+), w=2.18, e=2.28, bire=0.1000.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Squawcreekite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   16.90   17.60 
 546 nm   13.90   16.60 
 589 nm   12.50   15.50 
 650 nm   15.10   18.30 
Calculated Relative Intensity Colors of Squawcreekite in Air
   0%   70% 100% 140% 210% 280% 350% 420% 490% 560% 630% 640%

Calculated Properties of Squawcreekite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.87 gm/cc
note: Specific Gravity of Squawcreekite =6.44 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PESquawcreekite = 232.42 barns/electron
U=PESquawcreekite x rElectron Density=1,364.31 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Squawcreekite is Not Radioactive

Squawcreekite Classification

Help on  Dana Class: Dana Class: (04)Simple Oxides
  (04.04)with a cation charge of 4+ (A++++ O2)
  (04.04.01)Rutile group (Tetragonal: P4/mnm) Rutile TiO2 P 4/mnm 4/m 2/m 2/m Ilmenorutile (Ti,Nb,Fe)O2 P 4/mnm 4/m 2/m 2/m Struverite? (Ti,Ta,Fe)O2 P 4/mnm 4/m 2/m 2/m Pyrolusite MnO2 P 4/mnm 4/m 2/m 2/m Cassiterite SnO2 P 4/mnm 4/m 2/m 2/m Plattnerite PbO2 P 4/mnm 4/m 2/m 2/m Argutite GeO2 P 4/mnm 4/m 2/m 2/m Squawcreekite? (Fe,Sb,W)O4•(H2O) P 4/mnm 4/m 2/m 2/m Stishovite SiO2 P 4/mnm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.DB.05 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.05 Argutite GeO2 P 4/mnm 4/m 2/m 2/m
04.DB.05 Cassiterite SnO2 P 4/mnm 4/m 2/m 2/m
04.DB.05 Rutile TiO2 P 4/mnm 4/m 2/m 2/m
04.DB.05 Pyrolusite MnO2 P 4/mnm 4/m 2/m 2/m
04.DB.05 Plattnerite PbO2 P 4/mnm 4/m 2/m 2/m
04.DB.05 Varlamoffite* (Sn,Fe)(O,OH)2 P 41/mnm 4/m 2/m 2/m
04.DB.05 Squawcreekite? (Fe,Sb,W)O4•(H2O) P 4/mnm 4/m 2/m 2/m
04.DB.05 Tugarinovite MoO2 P 21/n 2/m
04.DB.05 Tripuhyite FeSbO4 P 41/mnm 4/m 2/m 2/m

Other Squawcreekite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.77,p449,1992) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Squawcreekite :
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 (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 04.DB.05





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