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Heyite Mineral Data

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General Heyite Information

Help on Chemical  Formula: Chemical Formula: Pb5Fe++2(VO4)2O4
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Pb5Fe2+2(VO4)2O4
Help on Environment: Environment: Secondary mineral in the oxidized portions of a polymetallic sulfide deposit.
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: Betty Jo claim, about 13 km southeast of Ely, Nevada district, White Pine Co., Nevada, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Max Hutchinson Hey (1904-1984), eminent British mineralogist and chemist, British Museum (Natural History), London, England.
Help on Name Pronunciation: Name Pronunciation: Heyite Say HEYITE

Heyite Image

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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

Help on Axial Ratios: Axial Ratios: a:b:c =1.4808:1:1.2853
Help on Cell Dimensions: Cell Dimensions: a = 8.91, b = 6.017, c = 7.734, Z = 1; beta = 111.88° V = 384.76 Den(Calc)= 6.22
Help on Crystal System: 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/Io): 3.248(1), 2.97(0.69), 2.767(0.61),

Physical Properties of Heyite

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow, Yellow orange.
Help on Density: Density: 6.3
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: amber colored

Optical Properties of Heyite

Help on Gladstone-Dale: 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
Help on Optical Data: 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

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.28 gm/cc
note: Specific Gravity of Heyite =6.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.16
Boson Index = 0.84
Help on Photoelectric: Photoelectric: PEHeyite =1,320.75 barns/electron
U=PEHeyite x rElectron Density=6,972.57 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Heyite is Not Radioactive

Heyite Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.02)where (A B)7 (XO4)2 Zq
  (41.02.02)Dana Group Heyite Pb5Fe2(VO4)2O4 P 21/m 2/m
Help on  Strunz Class: 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

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: 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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Dana No: Strunz No: 08.BK.20





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