Tinticite Mineral Data

General Tinticite Information

Chemical Formula:

Fe+++5(PO4,VO4)4•7(H2O)

Composition:

Molecular Weight = 772.21 gm

Vanadium 2.51 % V 4.48 % V₂O₅

Iron 38.62 % Fe 55.22 % Fe₂O₃

Phosphorus 13.08 % P 29.96 % P₂O₅

Hydrogen 1.75 % H 15.63 % H₂O

Oxygen 44.05 % O

______ ______

100.00 % 105.28 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺_5.34(PO₄)_3.26(VO₄)_0.38•6.7(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1946

Locality:

Tintic Standard mine, Tintic district, Utah Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Tinticite + Pronunciation

Tinticite Image

Images:

Tinticite

Comments: Porcelaneous tinticite chip.
Location: Near Tintic Standard Mine, Tintic District, Juab County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tinticite Crystallography

Axial Ratios:

a:b:c =0.7965:1:0.7644

Cell Dimensions:

a = 7.965, b = 9.999, c = 7.644, Z = 1; alpha = 103.94°, beta = 115.91°, gamma = 67.86° V = 492.28 Den(Calc)= 2.60

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 3.307(1), 3.027(0.95), 3.9504(0.95),

Crystal Structure:

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Rius J , Louer D , Louer M , Gali S , Melgarejo J C , European Journal of Mineralogy , 12 (2000) p.581-588, Structure solution from powder data of the phosphate hydrate tinticite

Physical Properties of Tinticite

Color:

White, Light brown, Pale yellowish green.

Density:

2.8 - 2.94, Average = 2.87

Habit:

Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye.

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Hardness:

2.5 - Finger Nail

Luster:

Earthy (Dull)

Streak:

white

Optical Properties of Tinticite

Gladstone-Dale:

CI meas= 0.126 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2934,KPDmeas= 0.2597,KC= 0.2971
Ncalc = 1.75 - 1.87

Optical Data:

Biaxial (?), a=1.745, g=1.7455, bire=0.0005

Calculated Properties of Tinticite

Electron Density:

Bulk Density (Electron Density)=2.50 gm/cc
note: Specific Gravity of Tinticite =2.54 gm/cc.

Fermion Index:

Fermion Index = 0.008464055
Boson Index = 0.991535945

Photoelectric:

PE_Tinticite= 12.55 barns/electron
U=PE_Tinticite x rElectron Density= 31.37 barns/cc.

Radioactivity:

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

Tinticite Classification

Dana Class:

42.12.04.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.12)with miscellaneous formulae

(42.12.04)Tinticite Group

42.12.04.01 Tinticite Fe5(PO4,VO4)4•7(H2O) P1 1

42.12.04.02 Kamarizaite! Fe3(AsO4)2(OH)3•3H2O Pccm, Pcc2, Pcmm, Pcm21 Ortho

Strunz Class:

08.DC.32 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1

08.DC.32 Tinticite Fe5(PO4,VO4)4•7(H2O) P1 1

Other Tinticite Information

References:

NAME( Dana8) PHYS. PROP.(AmMin, v 86, p 379) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Tinticite :
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 Tinticite here :
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Print or Cut-and-Paste your Tinticite Specimen Label here :

Tinticite

Fe+++5(PO4,VO4)4•7(H2O)
Dana No: 42.12.04.01 Strunz No: 08.DC.32
Locality:

Notes: