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Harkerite (Harkerit)

Pictures (2 Images total)

Harkerit
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Harkerit

Bildbreite: 15 mm; Fundort: Tazheran Syenit-Massiv, Baikalsee, Irkutsk Oblast, Russland

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-05-28
Locality: Tazheran Syenit-Massiv / Baikalsee / Irkutsk (Irkutskaja), Oblast / Sibirien, Föderationskreis / Russland
Harkerit-Oktaeder in blauem Calcit
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Harkerit-Oktaeder in blauem Calcit

Bildbreite: 60 mm; Fundort: Tazheran Syenit-Massiv, Baikalsee, Irkutsk Oblast, Russland

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-06-21
Locality: Tazheran Syenit-Massiv / Baikalsee / Irkutsk (Irkutskaja), Oblast / Sibirien, Föderationskreis / Russland

Collectors Summary

Color farblos
Streak color weiß
Lustre Glasglanz
Solubility +++ Säuren
Crystal System trigonal, R3m

Chemism

Chemical formula

Ca12Mg4Al(CO3)5(BO3)3(SiO4)4·H2O

Chemical composition

Aluminium, Calcium, Magnesium, Silicium, Bor, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 1467.9662222 u; Number of atoms in the formula: 72

Info

Empirical formula:

Ca12Mg4Al(CO3)5(BO3)3(SiO4)4·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.14

2

2.78

1.0079470

2.0158940

Boron

B

2.21

3

4.17

10.8117000

32.4351000

Carbon

C

4.09

5

6.94

12.0107800

60.0539000

Oxygen

O

44.69

41

56.94

15.9994300

655.9766300

Magnesium

Mg

6.62

4

5.56

24.3050600

97.2202400

Aluminium

Al

1.84

1

1.39

26.9815382

26.9815382

Silicon

Si

7.65

4

5.56

28.0855300

112.3421200

Calcium

Ca

32.76

12

16.67

40.0784000

480.9408000

Analysis wt%

SiO2 : 12.74, CO2 : 13.90, B2O3 : 9.20, Al2O3 : 2.51, FeO : 0.87, MgO : 11.32, CaO : 46.31, H2O : 1.92, Cl : 1.26 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 66)

Strunz 9th edition incl. updates

6.AB.70

6: Borate
A: Monoborate
B: BO3 mit zusätzlichen Anionen; 1(Δ) + OH, etc.
70:Harkerit-Gruppe

Lapis Classification

VIII/B.31-060

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
31: Kationen mit Koordinationszahlen zwischen [8] und [12]; Beryllium- und Bor-Inselsilikate

Classification by Hölzel

6.AB.830

6: Borates
A: Monoborates
B: BO3, with additional anions - 1(P)+OH, etc.
8: Gaudefroyite-Sakhaite-Group (heterotypes, homeotypes Sakhaite, Harkerite)

Dana 8th edition

17.01.09.01

17: Compound Carbonates
01: Compound Carbonates with miscellaneous formulae

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz

RI value α / ω / n

1.653

Ri mean

1.653

2V angle

Isotropisch

Anisotropism

isotropisch

Optical Data Luminescence

Color LW-UV (365nm)

rot

LW-UV Intensity

schwach

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

166

Space Group

R3m

Cell parameters a (Å)

10.438

Cell parameters b (Å)

-

Cell parameters c (Å)

51.3

Cell parameters a/b or c/a

4.915

Cell parameters c/b

-

Z

6

Volumne (ų)

4840.415

X-Ray Powder Diffraction

5.22(80),
3.39(50),
3.01(50),
2.84(50),
2.61(100),
2.13(80),
1.84(80),
1.51(80)

XRD chart Harkerite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.00 (berechnet)

3.021 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

Preface

Author (Name, Year)

Tilley, 1948

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 315

Tilley C E (1948) Dolomite contact skarns of the Broadford area, Skye: a preliminary note. Geological Magazine 85, 213-218.

R. James Evans, Lee A. Groat, Jan Cempírek, Radek Škoda, Edward S. Grew, Cyrielle Bernard: The crystal chemistry of the sakhaite–harkerite solid solution. American Mineralogist Volume 103 (2018) S. 1749–1760.

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Harkerite

Ca12Mg4Al(CO3)5(BO3)3(SiO4)4·H2O

trigonal : 3m : R3m

6.AB.70

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Kornerupine

(☐,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22

orthorhombisch : mmm : Cmcm

VIII/B.31-010

Prismatine

(Mg,Al,Fe2+)5-6Al4[(O,OH,F)3|BO3|((Si,Al)O4)4]

orthorhombisch : mmm : Cmcm

VIII/B.31-012

Magnesiodumortierite

MgAl6BSi3O17(OH)

orthorhombisch : mmm : Pmcn

VIII/B.31-015

Dumortierite

AlAl6BSi3O18

orthorhombisch : mmm : Pmcn

VIII/B.31-020

Holtite

(Ta0.60.4)Al6BSi3O18

orthorhombisch : mmm : Pnma

VIII/B.31-030

Grandidierite

(Mg,Fe2+)Al3(BO4)(SiO4)O

orthorhombisch : mmm : Pbnm

VIII/B.31-040

Ominelite

(Fe2+,Mg)Al3[O|BO4|SiO4]

orthorhombisch : mmm : Pbnm

VIII/B.31-042

Boralsilite

Al16[O5|(BO4)6|(SiO4)2]

monoklin : 2/m : C2/m

VIII/B.31-045

Werdingite

(Mg,Fe)2Al12(Al,Fe)2Si4(B,Al)4O37

triklin : 1 : P1

VIII/B.31-050

Harkerite

Ca12Mg4Al(CO3)5(BO3)3(SiO4)4·H2O

trigonal : 3m : R3m

VIII/B.31-060

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Canavesite

Mg2(CO3)(HBO3)·5H2O

6.AB.800

Sakhaite

Ca48Mg16Al(SiO3OH)4(CO3)16(BO3)28 ·(H2O)3(HCl)3

kubisch : m3m : Fd3m

6.AB.820

Harkerite

Ca12Mg4Al(CO3)5(BO3)3(SiO4)4·H2O

trigonal : 3m : R3m

6.AB.830

Gaudefroyite

Ca4Mn3-x3+(BO3)3(CO3)(O,OH)3

hexagonal : 6 : P63

6.AB.850

Qilianshanite

NaH4[CO3|BO3]·2 H2O

monoklin : 2 : C2

6.AB.870

Byzantievite

Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)

trigonal : 3 : R3

6.AB.890

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Tychite

Na6Mg2(CO3)4(SO4)

kubisch : m3 : Fd3

17.01.01.01

Ferrotychite

Na6Fe22+(SO4)(CO3)4

kubisch : m3 : Fd3

17.01.01.02

Manganotychite

Na6(Mn2+,Fe2+,Mg)2(SO4)(CO3)4

kubisch : m3 : Fd3

17.01.01.03

Leadhillite

Pb4(SO4)(CO3)2(OH)2

monoklin : 2/m : P21/a

17.01.02.01

Susannite

Pb4(SO4)(CO3)2(OH)2

trigonal : 3 : P3

17.01.03.01

Macphersonite

Pb4(SO4)(CO3)2(OH)2

orthorhombisch : mmm : Pcab

17.01.04.01

Schröckingerite

NaCa3(UO2)(CO3)3(SO4)F·10H2O

triklin : 1 : P1

17.01.05.01

Canavesite

Mg2(CO3)(HBO3)·5H2O

17.01.08.01

Harkerite

Ca12Mg4Al(CO3)5(BO3)3(SiO4)4·H2O

trigonal : 3m : R3m

17.01.09.01

Other languages

German

Harkerit

Spanish

Harkerita

French

Harkerite

English

Harkerite

Russian

Харкерит

Simplified Chinese

碳硼硅钙镁石

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Harkerit
Google-Bilder-Suche - search for: Harkerit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Harkerit

English pages

Mindat - search for: Harkerite
Webmineral - search for:Harkerite
Handbook-of-Mineralogy - search for: Harkerite
RRUFF - Raman, XRD and other mineral data - search for: Harkerite
RRUFF - References and PDF downloads - search for: Harkerite
American-Mineralogist-Crystal-Structure-Database - search for: Harkerite
Athena - search for: Harkerite

Russian pages

Webmineral.ru - search for: Харкерит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Harkerit
Crystal-Treasure.com - search for: Harkerit
Bosse - search for: Harkerit

Locations with GPS information




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