https://www.mineralbox.biz
https://www.edelsteine-neuburg.de
https://www.mineraliengrosshandel.com
https://www.mineral-bosse.de
'._('einklappen').'
 

Potassic-ferro-ferri-taramite

Pictures (2 Images total)

Taramit
Views (File:
1302787865
): 1519
Taramit
Größe: 6,7 x 6,2 x 3,3 cm, Fundort: Itinga, Minas Gerais, Brasilien
Copyright: Rob Lavinsky; Contribution: thdun5
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Jequitinhonha, Fluss/Itinga
Mineral: Potassic-ferro-ferri-taramite
Image: 1302787865
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Taramit

Größe: 6,7 x 6,2 x 3,3 cm, Fundort: Itinga, Minas Gerais, Brasilien

Copyright: Rob Lavinsky
Contribution: thdun5 2011-04-14
Locality: Itinga / Jequitinhonha, Fluss / Minas Gerais / Südosten (Região Sudeste) / Brasilien
Taramit
Views (File:
1302787818
): 938
Taramit
Kristallgröße: 6,5 cm, Fundort: Itinga, Minas Gerais, Brasilien
Copyright: Richard De Nul; Contribution: thdun5
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Jequitinhonha, Fluss/Itinga
Mineral: Potassic-ferro-ferri-taramite
Image: 1302787818
License: Usage for Mineralienatlas project only
Taramit

Kristallgröße: 6,5 cm, Fundort: Itinga, Minas Gerais, Brasilien

Copyright: Richard De Nul
Contribution: thdun5 2011-04-14
Locality: Itinga / Jequitinhonha, Fluss / Minas Gerais / Südosten (Região Sudeste) / Brasilien

Collectors Summary

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

Additional information / Summary

Neudefinition vom Amphibol-Subkomitee (2012). Das bisher als Taramit bekannte Material ist jetzt

Chemism

Chem­ical formula

K(CaNa)(Fe2+3Fe3+2)(Si6Al2)O22(OH)2

Chem­ical com­po­si­tion

Aluminium, Calcium, Eisen, Natrium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 989.8709506 u; Number of atoms in the formula: 42

Info

Empirical formula:

K(CaNa)(Fe3Fe2)(Si6Al2)O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.20

2

4.76

1.0079470

2.0158940

Oxygen

O

38.79

24

57.14

15.9994300

383.9863200

Sodium

Na

2.32

1

2.38

22.9897702

22.9897702

Aluminium

Al

5.45

2

4.76

26.9815382

53.9630764

Silicon

Si

17.02

6

14.29

28.0855300

168.5131800

Potassium

K

3.95

1

2.38

39.0983100

39.0983100

Calcium

Ca

4.05

1

2.38

40.0784000

40.0784000

Iron

Fe

28.21

5

11.90

55.8452000

279.2260000

Strunz 9th edi­tion incl. updates

9.DE.20

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
E: Ketten- und Bandsilikate mit 2-periodischen Doppelketten, Si4O11; Amphibol-Familie, Klinoamphibole
20:

Lapis Clas­sifica­tion

VIII/F.09-080

VIII: SILIKATE
F: Ketten- und Bandsilikate
9: Zweierbänder [Si4O11] 6-; Amphibol-Gruppe; Na-Ca-Amphibole

Clas­sifica­tion by Hölzel

9.DI.510

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
I: Amphiboles; Sodiccalcic Amphiboles
5: Taramite-Group

IMA sta­tus

Neudefinition von der CNMNC anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Classification

Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Sodium-calcium amphiboles  ⇒ Taramite (Tar) amphiboles

Optical Properties

Color

blaugrün, schwarz

Streak color

grünlichgrau

Diaphane­ity (Trans­parency)

semitransparent

Lus­tre

Glasglanz

max. Birefrin­gence

0.010

Birefringence chart\! Potassic-ferro-ferri-taramite title=Birefringence chart Potassic-ferro-ferri-taramite

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

1.705

RI value β

1.713

RI value γ / ε

1.715

Ri mean

1.711

2V angle

Biaxial (-) 54° (gemessen) 53.1° (berechnet)

Ori­enta­tion

Z = b, X ~ a, Y ~ c

Absorp­tion

Z > Y > X

Pleochro­ism

blaßgelb zu tief blaugrün

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

9.952

Cell param­e­ters b (Å)

18.101

Cell param­e­ters c (Å)

5.322

Cell param­e­ters a/b or c/a

0.550

Cell param­e­ters c/b

0.294

Cell param­e­ters α

90°

Cell param­e­ters β

105.45

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

924.067

Physical Properties

Hard­ness (Mohs)

5 - 6

VHN (Hard­ness Vick­ers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.498 (berechnet)

3.557 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Morozewicz, 1923

References

Canadian Mineralogist 35 (1997), 219

IMA group assignments





 
 
 
 
 
Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)F2
 
 

 
 
 
 
 
Na(NaCa)(Mg3Fe3+2)(Si6Al2)O22(OH)2
monoklin
C2/m

 
 
 
 
 
Na(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)F2
 
 

 
 
 
 
 
Na(NaCa)(Fe2+3Fe3+2)(Si6Al2)O22(OH)2
monoklin
C2/m

 
 
 
 
 
Na(CaNa)(Fe2+3Al2)(Al2Si6O22)F2
 
 

 
 
 
 
 
Na(CaNa)(Fe2+3Al2)(Si6Al2)O22(OH)2
monoklin
C2/m

 
 
 
 
 
Na(CaNa)(Mg3Al2)(Si6Al2)O22F2
monoklin
C2/m

 
 
 
 
 
Na2Ca(Mg3AlFe3+)(Si6Al2)O22(OH)2
monoklin
C2/m

 
 
 
 
 
K(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)
 
 

 
 
 
 
 
K(CaNa)(Fe2+3Fe3+2)(Si6Al2)O22(OH)2
monoklin
C2/m

 
 
 
 
 
K(CaNa)(Fe2+3Al2)(Si6Al2)O22(OH)2
monoklin
C/2m

 
 
 
 
 
Na(NaCa)(Mg3Al2)(Si6Al2)O22(OH)2
monoklin
C2/m

Refresh list

Actuality: 14. Aug 2022 - 20:47:14

Other languages

German

Kalium-Ferro-Ferri-Taramit

English

Potassic-ferro-ferri-taramite

old name

German

Taramit (1997)

English

Taramite (1997)

Alternative Name

German

Mboziit

Spanish

Mboziita

English

Mboziite

Tamarite (of Ford)

CNMNC symbol

Symbol

Pfftrm

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

German pages

DeWikiPedia - search for: Kalium-Ferro-Ferri-Taramit
Google-Bilder-Suche - search for: Kalium-Ferro-Ferri-Taramit
Mineralienatlas.de (Forum) - search for: Kalium-Ferro-Ferri-Taramit

English pages

Mindat - search for: Potassic-ferro-ferri-taramite
Webmineral - search for:Potassic-ferro-ferri-taramite
Handbook-of-Mineralogy - search for: Potassic-ferro-ferri-taramite
RRUFF - Raman, XRD and other mineral data - search for: Potassic-ferro-ferri-taramite
RRUFF - References and PDF downloads - search for: Potassic-ferro-ferri-taramite
American-Mineralogist-Crystal-Structure-Database - search for: Potassic-ferro-ferri-taramite
Strahlen.org - search for: Potassic-ferro-ferri-taramite

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Kalium-Ferro-Ferri-Taramit
Crystal-Treasure.com - search for: Kalium-Ferro-Ferri-Taramit
Bosse - search for: Kalium-Ferro-Ferri-Taramit
Edelsteine Neuburg - Gundolf Fischer - search for: Kalium-Ferro-Ferri-Taramit
Geolitho marketplace, by and for collectors - search for: Kalium-Ferro-Ferri-Taramit

Locations with GPS information