General Tripuhyite Information
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Chemical Formula: |
Fe++Sb+++++O4 |
Composition: |
Molecular Weight = 241.59 gm |
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Iron 23.12 % Fe 29.74 % FeO |
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Antimony 50.39 % Sb 66.95 % Sb2O5 |
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Oxygen 26.49 % O |
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______ ______ |
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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. |
Synonym: |
ICSD 40344 |
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IMA2002-A |
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PDF 7-349 |
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Squawcreekite |
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Tripuhyite Image |
Images:
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Tripuhyite
Comments: Brown tripuhyite on matrix.
Location: Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-W?rttemberg, Germany.
Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag |
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Tripuhyite Crystallography
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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 |
X Ray Diffraction: |
By Intensity(I/Io): 3.28(1), 1.72(0.9), 2.56(0.9), |
Crystal Structure:
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Help on Above
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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]
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Physical Properties of Tripuhyite
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Color: |
Brownish black, Greenish yellow, Yellow, Dark brown. |
Density: |
5.82 |
Diaphaniety: |
Translucent |
Habit: |
Fibrous - Crystals made up of fibers. |
Hardness: |
7 - Quartz |
Luster: |
Vitreous - Resinous |
Streak: |
yellow |
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Optical Properties of Tripuhyite
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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 |
Optical Data: |
Uniaxial (+), w=2.19, e=2.33, bire=0.1400. |
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Calculated Properties of Tripuhyite
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Electron Density: |
relectron=5.53 gm/cc note: rTripuhyite =6.13 gm/cc. |
Fermion Index |
Fermion Index = 0.00502 Boson Index = 0.99498 |
Photoelectric: |
PETripuhyite = 171.72 barns/electron U=PETripuhyite x relectron= 949.84 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tripuhyite is Not Radioactive |
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Tripuhyite Classification
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Dana Class: |
44.2.1.3 (44)Antimonates |
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(44.2)A (X2 O6) |
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(44.2.1)Dana Group |
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44.2.1.1 Bystromite MgSb2O6 P 41/mnm 4/m 2/m 2/m |
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44.2.1.2 Ordonezite ZnSb2O6 P 41/mnm 4/m 2/m 2/m |
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44.2.1.3 Tripuhyite FeSbO4 P 41/mnm 4/m 2/m 2/m |
Strunz Class: |
IV/D.04-50 IV - Oxides |
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IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds) |
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IV/D.04 - Tapiolite group |
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IV/D.04-10 Ferrotapiolite (Fe,Mn)(Ta,Nb)2O6 P 41/mnm 4/m 2/m 2/m |
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IV/D.04-20 Manganotapiolite (Mn,Fe)(Ta,Nb)2O6 P 41/mnm 4/m 2/m 2/m |
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IV/D.04-40 Bystromite MgSb2O6 P 41/mnm 4/m 2/m 2/m |
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IV/D.04-50 Tripuhyite FeSbO4 P 41/mnm 4/m 2/m 2/m |
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IV/D.04-60 Ordonezite ZnSb2O6 P 41/mnm 4/m 2/m 2/m |
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Other Tripuhyite Information
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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 - Crocoite.com Mineral Locations
4 - EUROmin Project
5 -Google Images
6 -Google Scholar
7 -Handbook of Mineralogy (UofA)
8 -MinDAT
9 -MinMax(Deutsch)
10 -MinMax(English)
11 -Mineralienatlas (Deutsch)
12 -QUT Mineral Atlas
13 - WWW-MINCRYST
14 -École des Mines de Paris
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Print or Cut-and-Paste your Tripuhyite Specimen Label here :
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Tripuhyite
Fe++Sb+++++O4
Dana No: 44.2.1.3 Strunz No: IV/D.04-50
Locality:
Notes:
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