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Ferro-tschermakite

Pictures (2 Images total)

Ferrotschermakit
Views (File:
1253400066
): 2155
Ferrotschermakit
Bildbreite 48 mm, Neukirchen bei hl.Blut, Bayrischer Wald
Copyright: Embarak; Contribution: Embarak
Collection: Embarak
Location: Deutschland/Bayern/Oberpfalz, Bezirk/Cham, Landkreis/Neukirchen beim Heiligen Blut
Mineral: Ferro-tschermakite
Image: 1253400066
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Ferrotschermakit

Bildbreite 48 mm, Neukirchen bei hl.Blut, Bayrischer Wald
Collection: Embarak
Copyright: Embarak
Contribution: Embarak 2009-09-20
Locality: Neukirchen beim Heiligen Blut / Cham, Landkreis / Oberpfalz, Bezirk / Bayern / Deutschland
Ferrotschermakit
Views (File:
1122558733
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Ferrotschermakit
dunkelgrün-bläuliche spätige Aggregate und anged. Kristalle; Stufengröße 4,5 x 5 cm; Fundort: Kayal, Kohistan, Pakistan
Copyright: Collector; Contribution: Collector
Collection: Collector
Location: Pakistan/Nordwestliche Grenzprovinz (Khyber Pakhtunkhwa)/Kohistan, Distrikt
Mineral: Ferro-tschermakite
Image: 1122558733
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Ferrotschermakit

dunkelgrün-bläuliche spätige Aggregate und anged. Kristalle; Stufengröße 4,5 x 5 cm; Fundort: Kayal, Kohistan, Pakistan

Collection: Collector
Copyright: Collector
Contribution: Collector 2005-07-28
Locality: Kohistan, Distrikt / Nordwestliche Grenzprovinz (Khyber Pakhtunkhwa) / Pakistan

Collectors Summary

Color grün, dunkelgrün, schwarz
Streak color grünlich grau
Hardness (Mohs) 5.5
Crystal System monoklin, C2/m

Chemism

Chemical formula

☐Ca2(Fe2+3Al2)(Si6Al2)O22(OH)2

Chemical composition

Aluminium, Calcium, Eisen, Silicium, Sauerstoff, Wasserstoff, Vakanz

Unit weight: 910.13394681 u; Number of atoms in the formula: 42

Info

Empirical formula:

VcCa2(Fe3Al2)(Si6Al2)O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Vacancy

Vc

0.00

1

2.38

0.0000000

0.0000000
Hydrogen

H

0.22

2

4.76

1.0079470

2.0158940
Oxygen

O

42.19

24

57.14

15.9994300

383.9863200
Aluminium

Al

11.86

4

9.52

26.9815382

107.9261528
Silicon

Si

18.52

6

14.29

28.0855300

168.5131800
Calcium

Ca

8.81

2

4.76

40.0784000

80.1568000
Iron

Fe

18.41

3

7.14

55.8452000

167.5356000

Strunz 9th edition incl. updates

9.DE.10

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

Lapis Classification

VIII/F.10-070

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

Classification by Hölzel

9.DH.520

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

IMA status

Neudefinition von der CNMNC anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Calcium amphiboles  ⇒ Tschermakite (Ts) amphiboles

Optical Properties

Color

grün, dunkelgrün, schwarz

Streak color

grünlich grau

Diaphaneity (Transparency)

durchscheinend bis teilweise opak

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

9.7598(6)

Cell parameters b (Å)

18.022(1)

Cell parameters c (Å)

5.3299(3)

Cell parameters a/b or c/a

0.542

Cell parameters c/b

0.296

Cell parameters α

90°

Cell parameters β

104.826(1)°

Cell parameters γ

90°

Z

2

Volumne (ų)

906.271

X-Ray Powder Diffraction

8.359(100),
3.388(27),
3.098(55),
2.708(87),
2.595(41),
2.552(43),
2.330(33),
2.159(27)
XRD chart Ferro-tschermakite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.41

3.335 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Frankreich/Bretagne, Region/Côtes-d'Armor, Département/Lannion, Arrondissement/Perros-Guirec/La Clarté/B.G.P. Granitsteinbruch

Type material

Museo di Mineralogia, Sistema Museale di Ateneo, University of Pavia, Italien

Collection number of type material

2016-02

Preface

Author (Name, Year)

Roberta Oberti, Massimo Boiocchi, Frank C. Hawthorne and Marco E. Ciriotti (2017)

ex. Winchell, 1945

References

Canadian Mineralogist 35 (1997), 219

Frank C. Hawthorne, Roberta Oberti, George E. Harlow, Walter V. Maresch, Robert F. Martin, John C. Schumacer, Mark D. Welch (2012): Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97, pages 2031–2048

Oberti, R., Boiocchi, M., Hawthorne, F.C. and Ciriotti, M.E. (2017) Ferro-tschermakite, IMA 2016-116. CNMNC Newsletter No. 37, June 2017, page 738; Mineralogical Magazine, 81, 737–742

IMA group assignments

Other languages

German

Ferro-Tschermakit

Spanish

Ferro-tschermakita

English

Ferro-tschermakite

French

Ferro-tschermakite

Russian

Феррочермакит

Japanese

鉄ﾁｪﾙﾏｸ閃石

Simplified Chinese

铁钙镁闪石

Alternative Name

Ferro-tschermakitic-hornblende

Italian

Ferrotschermakita

Simplified Chinese

铁镁钙闪石

CNMNC (IMA)-Number

IMA 2016-116

CNMNC symbol

Symbol

Fts

Locations with GPS information