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Ferro-kaersutite

Additional Functions

Collectors Summary

Color schwarz
Streak color blass bräunlich-grey
Lustre Glasglanz
Hardness (Mohs) 5 - 6
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

NaCa2(Fe2+3TiAl)(Si6Al2)O22O2

Chem­ical com­po­si­tion

Aluminium, Calcium, Eisen, Natrium, Silicium, Titan, Sauerstoff

Unit weight: 951.9933848 u; Number of atoms in the formula: 40

Info

Empirical formula:

NaCa2(Fe3TiAl)(Si6Al2)O22O2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

40.33

24

60.00

15.9994300

383.9863200
Sodium

Na

2.41

1

2.50

22.9897702

22.9897702
Aluminium

Al

8.50

3

7.50

26.9815382

80.9446146
Silicon

Si

17.70

6

15.00

28.0855300

168.5131800
Calcium

Ca

8.42

2

5.00

40.0784000

80.1568000
Titanium

Ti

5.03

1

2.50

47.8671000

47.8671000
Iron

Fe

17.60

3

7.50

55.8452000

167.5356000

Strunz 9th edi­tion incl. updates

9.DE.15

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
E: Ketten- und Bandsilikate mit 2-periodischen Doppelketten, Si4O11; Amphibol-Familie, Klinoamphibole
15:Amphibole: Ca > Na

Lapis Clas­sifica­tion

VIII/F.10-160

VIII: SILIKATE
F: Ketten- und Bandsilikate
10: Zweierbänder [Si4O11] 6-; Amphibol-Gruppe; Ca2-Amphibole

Clas­sifica­tion by Hölzel

9.DH.820

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
H: Amphiboles; Calcic Amphiboles
8: Kaersutite-Group

Hey's Chem­ical Index of Min­er­als

16.14.05

16: Silicates Containing Aluminum and other Metals
14: Aluminosilicates of Ti, Zr, Sn and Pb

IMA sta­tus

anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

 Amphibole supergroup  ⇒ O-dominant amphiboles  ⇒ Kaersutite (Krs) amphiboles

Optical Properties

Color

schwarz

Streak color

blass bräunlich-grey

Lus­tre

Glasglanz

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters α

90°

Cell param­e­ters γ

90°

Z

2

Physical Properties

Hard­ness (Mohs)

5 - 6

VHN (Hard­ness Vick­ers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.2

Preface

Author (Name, Year)

Leake, 1978

References

American Mineralogist 63 (1978), 1023.

Rock-forming Minerals (Deer, Howie & Zussmann), 2B, 2nd ed. (1997), Table 21, anal. 18, 19.

Popp, R.K., Virgo, D., and Phillips, M. (1995) H deficiency in kaersutitic amphiboles: experimental verification - American Mineralogist 80, 1347-1350.

Canadian Mineralogist 35 (1997), 219.

Hawthorne, Frank C., and Roberta Oberti, On the classification of amphiboles - Canadian Mineralogist 44(1) (2006), 1-21.

Hawthorne et al, Nomenclature of the amphibole supergroup, American Mineralogist 97 (2012), 2031-2048

IMA group assignments

Other languages

German

Ferro-Kaersutit

Spanish

Ferro-kaersutita

English

Ferro-kaersutite

French

Ferro-kaersutite

Japanese

鉄ｹﾙｽｰﾄ閃石

Alternative Name

Italian

Ferrokaersutita

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

German pages

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English pages

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German pages

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