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 % Sb₂O₅

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 Tripuí !!) 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:

Tripuhyite Squawcreekite

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 DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4₁/mnm

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

By Intensity(I/I_o): 3.28(1), 1.72(0.9), 2.56(0.9),

Crystal Structure:

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Basso R , Cabella R , Lucchetti G , Marescotti P , Martinelli A , Neues Jahrbuch fur Mineralogie, Monatshefte , 2003 (2003) p.407-420, Structural studies on synthetic and natural Fe-Sb-oxides of MO2 type, Locality: Djebel Nador, Algeria, Sample: case 1 refinement in the rutile structure, This is the preferred structural model

View Additional jPOWD Structure files for Tripuhyite
[1] [2]

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:

PE_Tripuhyite= 171.72 barns/electron
U=PE_Tripuhyite x rElectron 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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Ask about Tripuhyite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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: