Tripuhyite Mineral Data
General Tripuhyite Information
Chemical Formula:
Fe++Sb+++++O4
Composition:
Molecular Weight = 241.59 gm
Iron 23.12 % Fe 29.74 % FeO
Antimony 50.39 % Sb 66.95 % Sb2 O5
Oxygen 26.49 % O
______ ______
100.00 % 96.69 % = TOTAL OXIDE
Empirical Formula:
Fe2+ SbO4
IMA Status:
Valid Species (Pre-IMA) 1897
Locality:
Tripuhy valley (today Tripu� !!) near Ouro Preto. Link to MinDat.org Location Data.
Name Origin:
Named after its locality.
Name Pronunciation:
Tripuhyite + Pronunciation
Synonym:
ICSD 40344
IMA2002-A
PDF 7-349
Squawcreekite
Tripuhyite Image
Images:
Tripuhyite
Comments: Brown tripuhyite on matrix.
Location: Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany.
Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag
Images:
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
Tripuhyite Crystallography
Axial Ratios:
a:c = 1:0.6614
Cell Dimensions:
a = 4.625, c = 3.059, Z = 1; V = 65.43 Den(Calc)= 6.13
Crystal System:
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 41 /mnm
X Ray Diffraction:
By Intensity(I/Io ): 3.28(1), 1.72(0.9), 2.56(0.9),
Physical Properties of Tripuhyite
Color:
Brownish black, Greenish yellow, Yellow, Dark brown.
Density:
5.82
Diaphaneity:
Translucent
Habit:
Fibrous - Crystals made up of fibers.
Hardness:
7 - Quartz
Luster:
Vitreous - Resinous
Streak:
yellow
Optical Properties of Tripuhyite
Gladstone-Dale:
CI meas = -0.367 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = -0.298 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2055,KPDmeas = 0.2165,KC = 0.1583 Ncalc = 1.92 - 1.97
Optical Data:
Uniaxial (+), w=2.19, e=2.33, bire=0.1400.
Calculated Properties of Tripuhyite
Electron Density:
Bulk Density (Electron Density)=5.53 gm/cc note: Specific Gravity of Tripuhyite =6.13 gm/cc.
Fermion Index:
Fermion Index = 0.0050277417 Boson Index = 0.9949722583
Photoelectric:
PETripuhyite = 171.72 barns/electronU=PETripuhyite x r Electron Density= 949.84 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tripuhyite is Not Radioactive
Tripuhyite Classification
Dana Class:
44.02.01.03 (44) Antimonates
(44.02) A (X2 O6)
(44.02.01) Bystromite Group
44.02.01.01 Bystromite MgSb2O6 P 41 /mnm 4/m 2/m 2/m
44.02.01.02 Ordonezite ZnSb2O6 P 41 /mnm 4/m 2/m 2/m
44.02.01.03 Tripuhyite FeSbO4 P 41 /mnm 4/m 2/m 2/m
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 Tripuhyite Information
References:
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990, AmMin, v 88, p 1629) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Tripuhyite :
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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Tripuhyite Specimen Label here :
Tripuhyite
Fe++Sb+++++O4
Dana No: 44.02.01.03 Strunz No: 04.DB.05
Locality:
Notes:
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