Fervanite Mineral Data

Fervanite Mineral Data +

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General Fervanite Information

Chemical Formula:

Fe+++4(VO4)4·5(H2O)

Composition:

Molecular Weight = 773.22 gm

Vanadium 26.35 % V 47.04 % V₂O₅

Iron 28.89 % Fe 41.31 % Fe₂O₃

Hydrogen 1.30 % H 11.65 % H₂O

Oxygen 43.45 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺₄(VO₄)₄·5(H₂O)

Environment:

U-V deposits of the Colorado Plateau.

IMA Status:

Valid Species (Pre-IMA) 1931

Locality:

Polar Mesa, Grand County, Utah, USA. Link to MinDat.org Location Data.

Name Origin:

Named for its composition.

Fervanite Image

Images:

Fervanite Hewettite

Comments: Spherical aggregate of acicular microcrystals of fervanite with blocky hewettite.
Location: Gold Quarry Mine, Carlin Trend, Eureka County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fervanite Crystallography

Crystal System:

MonoclinicSpace Group: Unk.

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

By Intensity(I/I_o): 8.79(1), 6.45(0.9), 3.22(0.8),3.15(0.7), 2.93(0.5), 2.99(0.5), 2.91(0.2), 3.29(0.2),

Physical Properties of Fervanite

Cleavage:

None

Color:

Yellow, Brown, Pale green.

Habit:

Fibrous - Crystals made up of fibers.

Luminescence:

Non-fluorescent.

Luster:

Adamantine

Streak:

yellowish brown

Optical Properties of Fervanite

Optical Data:

Biaxial (-), a=2.186, b=2.222, g=2.224, bire=0.0380, 2V(Calc)=26, 2V(Meas)=0-20. Dispersion relatively strong.

Calculated Properties of Fervanite

Fermion Index

Fermion Index = 0.00699
Boson Index = 0.99301

Photoelectric:

PE_Fervanite= 13.74 barns/electron
U=PE_Fervanite x r_electron= . barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Fervanite is Not Radioactive

Fervanite Classification

Dana Class:

47.3.4.1 (47)Vanadium Oxysalts

(47.3)(Hydrated)

(47.3.4)Dana Group

47.3.4.1 Fervanite Fe4(VO4)4·5(H2O) Unk. Mono

Strunz Class:

VII/C.07-20 VII - Phosphates, Arsenates and Vanadates

VII/C - Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg

VII/C.07 - Schubnelite - Warikahnite series

VII/C.07-05 Serrabrancaite! MnPO4·(H2O) C 2/c 2/m

VII/C.07-10 Schubnelite Fe(VO4)(H2O) P1 1

VII/C.07-20 Fervanite Fe4(VO4)4·5(H2O) Unk. Mono

VII/C.07-30 Kolovratite HydrousvanadateofNiandZn ? Mono

VII/C.07-40 Warikahnite Zn3(AsO4)2·2(H2O) P1 1

Other Fervanite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Fervanite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Print or Cut-and-Paste your Fervanite Specimen Label here :

Fervanite

Fe+++4(VO4)4·5(H2O)
Dana No: 47.3.4.1 Strunz No: VII/C.07-20
Locality:

Notes: