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Harrisonite

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Harrisonit
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Harrisonit
rötlicher Harrisonit, Arcedeckne Island, Franklin District, Nunavut Territory, Kanada; BB ~ 2 cm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Kanada/Nordwest-Territorien (Northwest Territories)/Franklin Distrikt/Arcedeckne Insel
Mineral: Harrisonite
Image: 1583252940
License: Usage for Mineralienatlas project only
Harrisonit

rötlicher Harrisonit, Arcedeckne Island, Franklin District, Nunavut Territory, Kanada; BB 2 cm
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-03
Locality: Arcedeckne Insel / Franklin Distrikt / Nordwest-Territorien (Northwest Territories) / Kanada

Collectors Summary

Color gelbbraun, orange braun
Streak color hellgelb
Hardness (Mohs) 4.75
Cleavages sehr undeutlich
Fracture muschelig
Crystal System trigonal, R3m

Chemism

Chemical formula

Ca(Fe2+,Mg)6[PO4|SiO4]2

Chemical composition

Calcium, Eisen, Magnesium, Silicium, Phosphor, Sauerstoff

Unit weight: 701.9488524 u; Number of atoms in the formula: 27

Info

Empirical formula:

Ca(Fe0.75Mg0.25)6[PO4SiO4]2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

36.47

16

59.26

15.9994300

255.9908800
Magnesium

Mg

5.19

1.5

5.56

24.3050600

36.4575900
Silicon

Si

8.00

2

7.41

28.0855300

56.1710600
Phosphorus

P

8.83

2

7.41

30.9737612

61.9475224
Calcium

Ca

5.71

1

3.70

40.0784000

40.0784000
Iron

Fe

35.80

4.5

16.67

55.8452000

251.3034000

Analysis wt%

CaO : 7.65, FeO : 52.27, MgO : 3.89, SiO2 : 15.99, P2O5 : 19.18 (Ref: Canadian Mineralogist 93)

Strunz 9th edition incl. updates

8.AC.55

8: Phosphate, Arsenate, Vanadate
A: Phosphate, etc., ohne weitere Anionen, ohne H2O
C: Mit mittelgroßen und großen [Kationen]
55:Harrisonit-Gruppe

Lapis Classification

VIII/B.22-075

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
22: Kationen mit Koordinationszahlen zwischen [8] und [12]

Classification by Hölzel

9.AJ.400

9: SILICATES
A: Nesosilicates
J: Nesosilicates with other complex Anions
4: With ~[PO4]

Dana 8th edition

53.02.03.01

53: Nesosilicates Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations
02: Nesosilicates Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations with (SO4), (CrO4), (PO4), etc.

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

gelbbraun, orange braun

Streak color

hellgelb

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.011
Birefringence chart\! Harrisonite title=Birefringence chart Harrisonite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.770

RI value γ / ε

1.759

Ri mean

1.766

2V angle

Uniaxial (-)

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

166

Space Group

R3m

Cell parameters a (Å)

6.240

Cell parameters b (Å)

-

Cell parameters c (Å)

26.784

Cell parameters a/b or c/a

4.292

Cell parameters c/b

-

Z

3

Volumne (ų)

903.182

X-Ray Powder Diffraction

5.00(60),
4.46(50),
3.119(100),
2.689(80),
2.558(100),
2.505(80),
1.903(60),
1.560(80)
XRD chart Harrisonite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.75

VHN (Hardness Vickers)

340 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.02

3.871 ( ρ calc. Mineralienatlas )

Cleavages

sehr undeutlich

Fracture

muschelig

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Kanada/Nordwest-Territorien (Northwest Territories)/Franklin Distrikt/Arcedeckne Insel

Preface

Name from

James Merritt Harrison, Kanada (1915 – 1990)

Author (Name, Year)

Roberts & Stirling & Grice & Frisch & Herd & Jambor, 1993

References

Roberts, A.C., Stirling, J.A.R., Grice, J.D., Frisch, T., Herd, R.K., Jambor, J.L.: Harrisonite, a new calcium iron silicate-phosphate from Arcedeckne Island, District of Franklin, Arctic Canada. Canadian Mineralogist Vol. 31 (1993) S. 775-780.

Other languages

German

Harrisonit

Spanish

Harrisonita

French

Harrisonite

English

Harrisonite

Russian

Харрисонит

CNMNC (IMA)-Number

IMA 1991-010

CNMNC symbol

Symbol

Hrs

Locations with GPS information

IDs

GUSID (Global unique identifier short form) YBmHvw65NEi22iBw3d9FWQ
GUID (Global unique identifier) BF871960-B90E-4834-B6DA-2070DDDF4559
Database ID 1521