Mineralogy Database

Harrisonite Mineral Data

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General Harrisonite Information

Help on Chemical  Formula: Chemical Formula: Ca(Fe++,Mg)6(PO4)2(SiO4)2
Help on Composition: Composition: Molecular Weight = 732.77 gm
   Calcium      5.47 %  Ca    7.65 % CaO
   Magnesium    2.32 %  Mg    3.85 % MgO
   Iron        41.16 %  Fe   52.95 % FeO
   Silicon      7.67 %  Si   16.40 % SiO2
   Phosphorus   8.45 %  P    19.37 % P2O5
   Oxygen      34.93 %  O
              ______        ______ 
              100.00 %      100.22 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaFe2+5.4Mg0.7(PO4)2(SiO4)2
Help on Environment: Environment: Constituent in a layered iron silicate-quartz-apatite body in gneisses, probably a shaly and phosphatic iron formation metamorphosed to the granulite facies.
Help on IMA Status: IMA Status: Approved IMA 1993 (Dana # Added)
Help on Locality: Locality: Arcedeckne Island, near the Boothia Peninsula, District of Franklin, Arctic Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for James Merritt Harrison (1915-1990), tth former director of the Canadian Geological Service.
Help on Name Pronunciation: Name Pronunciation: Harrisonite + Pronunciation Say HARRISONITE
Help on Synonym: Synonym: ICSD 75926
  PDF 46-1433

Harrisonite Image

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Comments: Glassy brown crystalline harrisonite grains in matrix.
Location: Arcedeckne Island, District of Franklin, Northwest Territories, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Harrisonite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:4.28969
Help on Cell Dimensions: Cell Dimensions: a = 6.248, c = 26.802, Z = 3; V = 906.11 Den(Calc)= 4.03
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.119(1), 2.558(1), 1.56(0.8),2.505(0.8), 2.689(0.8), 1.903(0.6), 5(0.6),

Physical Properties of Harrisonite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Yellow brown, Orange brown.
Help on Density: Density: 4.02
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Selvage - As a reaction rim, surrounding the host mineral.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light yellow

Optical Properties of Harrisonite

Help on Dichroism (e): Dichroism (e): pale yellow.
Help on Dichroism (w): Dichroism (w): paler yellow.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1897,KPDmeas= 0.1902,KC= 0.1929
Ncalc = 1.78
Help on Optical Data: Optical Data: Uniaxial (-), e=1.759, w=1.77, bire=0.0110.

Calculated Properties of Harrisonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.89 gm/cc
note: Specific Gravity of Harrisonite =4.02 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEHarrisonite = 13.79 barns/electron
U=PEHarrisonite x rElectron Density= 53.70 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Harrisonite is Not Radioactive

Harrisonite Classification

Help on  Dana Class: Dana Class: (53)Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations
  (53.02)with (SO4), (CrO4), (PO4), etc.
  (53.02.03)Dana Group Harrisonite! Ca(Fe,Mg)6(PO4)2(SiO4)2 R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 08.AC.55 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AC -With medium-sized and large cations
08.AC.55 Harrisonite! Ca(Fe,Mg)6(PO4)2(SiO4)2 R 3m 3 2/m

Other Harrisonite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Harrisonite :
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.AC.55





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