Harrisonite Mineral Data

[Miner's Monthly] [Activity Books] [Clip Art] [Mineral Bingo] [Note Cards]
Fun & Educational Publications for Young Mineralogists

General Harrisonite Information

Chemical Formula:

Ca(Fe++,Mg)6(PO4)2(SiO4)2

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

Empirical Formula:

CaFe²⁺_5.4Mg_0.7(PO₄)₂(SiO₄)₂

Environment:

Constituent in a layered iron silicate-quartz-apatite body in gneisses, probably a shaly and phosphatic iron formation metamorphosed to the granulite facies.

IMA Status:

Approved IMA 1993 (Dana # Added)

Locality:

Arcedeckne Island, near the Boothia Peninsula, District of Franklin, Arctic Canada. Link to MinDat.org Location Data.

Name Origin:

Named for James Merritt Harrison (1915-1990), tth former director of the Canadian Geological Service.

Name Pronunciation:

Harrisonite + Pronunciation

Synonym:

ICSD 75926

IMA1991-010

PDF 46-1433

Harrisonite Image

Images:

Harrisonite

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

Axial Ratios:

a:c = 1:4.28969

Cell Dimensions:

a = 6.248, c = 26.802, Z = 3; V = 906.11 Den(Calc)= 4.03

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 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),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Grice J D , Roberts A C , The Canadian Mineralogist , 31 (1993) p.781-785, Harrisonite, a well-ordered silico-phosphate with a layered crystal structure., Ca(Fe,Mg)6(SiO4)2(PO4)2, Locality: Arcedeckne Island, Artic Canada

Physical Properties of Harrisonite

Cleavage:

{???} Indistinct

Color:

Yellow brown, Orange brown.

Density:

4.02

Diaphaneity:

Transparent to Translucent

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Habit:

Selvage - As a reaction rim, surrounding the host mineral.

Hardness:

4-5 - Fluorite-Apatite

Luster:

Vitreous (Glassy)

Streak:

light yellow

Optical Properties of Harrisonite

Dichroism (e):

pale yellow.

Dichroism (w):

paler yellow.

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

Optical Data:

Uniaxial (-), e=1.759, w=1.77, bire=0.0110.

Calculated Properties of Harrisonite

Electron Density:

Bulk Density (Electron Density)=3.89 gm/cc
note: Specific Gravity of Harrisonite =4.02 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Harrisonite= 13.79 barns/electron
U=PE_Harrisonite x rElectron Density= 53.70 barns/cc.

Radioactivity:

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

Harrisonite Classification

Dana Class:

53.02.03.01 (53)Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations

(53.02)with (SO4), (CrO4), (PO4), etc.

(53.02.03)Dana Group

53.02.03.01 Harrisonite! Ca(Fe,Mg)6(PO4)2(SiO4)2 R 3m 3 2/m

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

References:

NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(AntBidBlaNic2)

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 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Harrisonite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Harrisonite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Diamond Dan Publications

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Harrisonite Mineral Data :

Ask about Harrisonite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Harrisonite

Ca(Fe++,Mg)6(PO4)2(SiO4)2
Dana No: 53.02.03.01 Strunz No: 08.AC.55
Locality:

Notes: