Heyite Mineral Data

General Heyite Information

Chemical Formula:

Pb5Fe++2(VO4)2O4

Composition:

Molecular Weight = 1,441.57 gm

Vanadium 7.07 % V 12.62 % V₂O₅

Iron 7.75 % Fe 9.97 % FeO

Lead 71.87 % Pb 77.42 % PbO

Oxygen 13.32 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₅Fe²⁺₂(VO₄)₂O₄

Environment:

Secondary mineral in the oxidized portions of a polymetallic sulfide deposit.

IMA Status:

Approved IMA 1973

Locality:

Betty Jo claim, about 13 km southeast of Ely, Nevada district, White Pine Co., Nevada, USA. Link to MinDat.org Location Data.

Name Origin:

Max Hutchinson Hey (1904-1984), eminent British mineralogist and chemist, British Museum (Natural History), London, England.

Name Pronunciation:

Heyite

Heyite Image

Images:

Heyite

Comments: Mustard yellow colored microcrystalline aggregates of heyite on quartz.
Location: Betty Joe Claim, near Ely, White Pine County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Heyite Crystallography

Axial Ratios:

a:b:c =1.4808:1:1.2853

Cell Dimensions:

a = 8.91, b = 6.017, c = 7.734, Z = 1; beta = 111.88° V = 384.76 Den(Calc)= 6.22

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/m

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

By Intensity(I/I_o): 3.248(1), 2.97(0.69), 2.767(0.61),

Physical Properties of Heyite

Cleavage:

None

Color:

Yellow, Yellow orange.

Density:

6.3

Diaphaneity:

Transparent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Hardness:

4 - Fluorite

Luster:

Vitreous (Glassy)

Streak:

amber colored

Optical Properties of Heyite

Gladstone-Dale:

CI meas= -0.18 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.195 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1967,KPDmeas= 0.1942,KC= 0.1646
Ncalc = 2.02 - 2.04

Optical Data:

Biaxial (?), a=2.185, b=2.219, g=2.266, bire=0.0810, 2V(Calc)=84, 2V(Meas)=89.

Calculated Properties of Heyite

Electron Density:

Bulk Density (Electron Density)=5.28 gm/cc
note: Specific Gravity of Heyite =6.30 gm/cc.

Fermion Index:

Fermion Index = 0.16
Boson Index = 0.84

Photoelectric:

PE_Heyite=1,320.75 barns/electron
U=PE_Heyite x rElectron Density=6,972.57 barns/cc.

Radioactivity:

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

Heyite Classification

Dana Class:

41.02.02.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.02)where (A B)7 (XO4)2 Zq

(41.02.02)Dana Group

41.02.02.01 Heyite Pb5Fe2(VO4)2O4 P 2₁/m 2/m

Strunz Class:

08.BK.20 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BK -With medium-sized and large cations, (OH, etc.)

08.BK.20 Heyite Pb5Fe2(VO4)2O4 P 2₁/m 2/m

Other Heyite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Heyite :
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

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

Heyite

Pb5Fe++2(VO4)2O4
Dana No: 41.02.02.01 Strunz No: 08.BK.20
Locality:

Notes:

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