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Ferriakasakaite-(La)

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Ferriakasakait-(La)
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Ferriakasakait-(La)
Schwarze abgefalchte Kristalle auf Sanidin, Photo Marko Burkhardt. Identification by SXRD and EMPA; Fundort: In den Dellen quarries, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany; Fov: 1.8 mm;
Copyright: christof schäfer; Contribution: Stefan
Collection: christof schäfer
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mendig, Verbandsgemeinde/In den Dellen (Grube Zieglowski)
Mineral: Ferriakasakaite-(La)
Image: 1570515839
License: Usage for Mineralienatlas project only
Ferriakasakait-(La)

Schwarze abgefalchte Kristalle auf Sanidin, Photo Marko Burkhardt. Identification by SXRD and EMPA; Fundort: In den Dellen quarries, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany; Fov: 1.8 mm;

Collection: christof schäfer
Copyright: christof schäfer
Contribution: Stefan 2019-10-08
Locality: In den Dellen (Grube Zieglowski) / Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

Collectors Summary

Color schwarz, dunkelbraun
Lustre Glasglanz
Hardness (Mohs) 5
Crystal System monoklin, P21/m

Chemism

Chemical formula

CaLaFe3+AlMn2+(Si2O7)(SiO4)O(OH)

Chemical composition

Aluminium, Calcium, Eisen, Lanthanum, Mangan, Silicium, Sauerstoff, Wasserstoff

Unit weight: 610.0058351 u; Number of atoms in the formula: 22

Info

Empirical formula:

CaLaFeAlMn(Si2O7)(SiO4)O(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.17

1

4.55

1.0079470

1.0079470

Oxygen

O

34.10

13

59.09

15.9994300

207.9925900

Aluminium

Al

4.42

1

4.55

26.9815382

26.9815382

Silicon

Si

13.81

3

13.64

28.0855300

84.2565900

Calcium

Ca

6.57

1

4.55

40.0784000

40.0784000

Manganese

Mn

9.01

1

4.55

54.9380499

54.9380499

Iron

Fe

9.15

1

4.55

55.8452000

55.8452000

Lanthanum

La

22.77

1

4.55

138.9055200

138.9055200

Strunz 9th edition incl. updates

9.BG.05

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
G: Gruppen(Soro)-Silikate mit gemischten SiO4 und Si2O7 Gruppen; Kationen in oktahedraler [6] und größerer Koordination
05:Epidot-Gruppe

Lapis Classification

VIII/C.23-068

VIII: SILIKATE
C: Gruppensilikate
23: Mischstrukturen mit [SiO4] 4--Inseln und [Si2O7] 6--Gruppen; Epidot-Gruppe

IMA status

anerkannt - CNMNC Newsletter No. 20, Juni 2014, page 551

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Epidote supergroup  ⇒ Allanite group

Optical Properties

Color

schwarz, dunkelbraun

Lustre

Glasglanz

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

8.8733(2)

Cell parameters b (Å)

5.7415(1)

Cell parameters c (Å)

10.0805(3)

Cell parameters a/b or c/a

1.545

Cell parameters c/b

1.756

Cell parameters α

90°

Cell parameters β

113.845(2)

Cell parameters γ

90°

Z

2

Volume (ų)

469.725

Crystal structure

Epidot-Supergruppe

X-Ray Powder Diffraction

9.220(26), 3.509(47), 2.899(100), 2.871(40), 2.710(35), 2.706(35), 2.614(53), 2.573(26)

XRD chart Ferriakasakaite-(La)

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

Density (g/cm³)

4.313 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Japan/Honshū (Honschu), Insel/Kinki, Region (Kansai Zweckverband)/Mie, Präfektur/Ise, Stadt

Japan/Honshū (Honschu), Insel/Kinki, Region (Kansai Zweckverband)/Mie, Präfektur/Ise, Stadt/Shobu/Unbenannte Mangan-Lagerstätte

Type material

National Museum of Nature and Science, Tsukuba, Japan

Collection number of type material

NSM M-43919

Preface

Author (Name, Year)

Nagashima M., Nishio-Hamane D., N. Tomita, Minakawa T., S. Inaba (2013)

References

Nagashima, M., Nishio-Hamane, D., Tomita, N., Minakawa, T. and Inaba, S. (2014) Ferriakasakaite-(La), IMA 2013-126. CNMNC Newsletter No. 20, June 2014, page 551; Mineralogical Magazine, 78, 549-558.

Nagashima, M., Nishio-Hamane, D., Tomita, N., Minakawa, T., Inaba, S. - Ferriakasakaite-(La) and ferriandrosite-(La): new epidote-supergroup minerals from Ise, Mie Prefecture, Japan. Mineralogical Magazine, 79 (2015), 735-753.

IMA group assignments

Other languages

German

Ferriakasakait-(La)

English

Ferriakasakaite-(La)

Russian

Ферриакасакаит-(La)

Japanese

ランタンフェリ赤坂石

CNMNC (IMA)-Number

IMA 2013-126

CNMNC symbol

Symbol

Fak-La

Locations with GPS information

IDs

GUSID (Global unique identifier short form) ME_lZOdonEutIhVBv2PsRA
GUID (Global unique identifier) 64E54F30-68E7-4B9C-AD22-1541BF63EC44
Database ID 7749