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Ferriallanite-(La)

Pictures (1 Images total)

schwarzer dicktafelig-blockiger Ferriallanit-La
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schwarzer dicktafelig-blockiger Ferriallanit-La
vom Steinbruch "In den Dellen" bei Mendig, Vulkaneifel, Rheinland-Pfalz, (Typlokalität), BB = 2,0 mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A039305, Donator: anatasi
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mendig, Verbandsgemeinde/In den Dellen (Grube Zieglowski)
Mineral: Ferriallanite-(La)
Image: 1551532080
License: Usage for Mineralienatlas project only
schwarzer dicktafelig-blockiger Ferriallanit-La (SNr: A039305)

vom Steinbruch "In den Dellen" bei Mendig, Vulkaneifel, Rheinland-Pfalz, (Typlokalität), BB = 2,0 mm
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2019-03-02
Locality: In den Dellen (Grube Zieglowski) / Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

Collectors Summary

Crystal System monoklin, P21/m

Chemism

Chemical formula

Ca(La,Ce,Th)(Fe3+,Al)(Al,Fe3+)(Fe2+,Mn,Ti,Mg)(SiO4)(Si2O7)O(OH)

Additional chem. information

Epidot-Gruppe

Chemical composition

Aluminium, Calcium, Cerium, Eisen, Lanthanum, Magnesium, Mangan, Silicium, Thorium, Titan, Sauerstoff, Wasserstoff

Unit weight: 617.94245617 u; Number of atoms in the formula: 22

Info

Empirical formula:

Ca(La0.6Ce0.3Th0.1)(Fe0.75Al0.25)(Al0.75Fe0.25)(Fe0.55Mn0.3Ti0.1Mg0.05)(SiO4)(Si2O7)O(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.16

1

4.55

1.0079470

1.0079470
Oxygen

O

33.66

13

59.09

15.9994300

207.9925900
Magnesium

Mg

0.20

0.05

0.23

24.3050600

1.2152530
Aluminium

Al

4.37

1

4.55

26.9815382

26.9815382
Silicon

Si

13.64

3

13.64

28.0855300

84.2565900
Calcium

Ca

6.49

1

4.55

40.0784000

40.0784000
Titanium

Ti

0.77

0.1

0.45

47.8671000

4.7867100
Manganese

Mn

2.67

0.3

1.36

54.9380499

16.4814150
Iron

Fe

14.01

1.55

7.05

55.8452000

86.5600600
Lanthanum

La

13.49

0.6

2.73

138.9055200

83.3433120
Cerium

Ce

6.80

0.3

1.36

140.1161000

42.0348300
Thorium

Th

3.76

0.1

0.45

232.0381100

23.2038110

Analysis wt%

SiO2 : 29.50, Al2O3 : 8.34, Fe2O3 : 13.07, FeO : 8.23, MnO : 3.48, La2O3 : 18.66, Ce2o3 : 8.06, CaO : 9.18, H2O : 1.47, Ln2O3 : 26.72 (Ref: berechnet)

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.23-048

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

Classification by Hölzel

9.BN.215

9: SILICATES
B: Sorosilicates
N: With SiO4 + Si2O7
2: Allanite-Group

IMA status

anerkannt, Jan. 2011 - CNMNC Newsletter No. 8, April 2011

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Epidote supergroup  ⇒ Allanite group

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

8.938

Cell parameters b (Å)

5.789

Cell parameters c (Å)

10.153

Cell parameters a/b or c/a

1.544

Cell parameters c/b

1.754

Cell parameters α

90°

Cell parameters β

114.93

Cell parameters γ

90°

Z

2

Volumne (ų)

476.388

X-Ray Powder Diffraction

9.22(19), 7.96(34), 3.53(38), 2.92(100), 2.72(50), 2.63(36), 2.16(17), 1.639(34)
XRD chart Ferriallanite-(La)

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

4.308 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mendig, Verbandsgemeinde/In den Dellen (Grube Zieglowski)

Type material

Der Holotyp findet sich in der Sammlung des Naturhistorischen Museums, Wien (Natural History Museum, Vienna) und der Co-Typ (probe mount) wird im der Sammlung des Museums von Victoria aufbewahrt.

Collection number of type material

N 8164 (Naturhistorisches Museum, Wien); M49750 (Museum Victoria)

Preface

Author (Name, Year)

Uwe Kolitsch, Stuart J. Mills, Ritsuro Miyawaki and Günter Blaß (2011)

References

CNMNC Newsletter No. 8, April 2011, page 291; Mineralogical Magazine, 75, 289-294.

IMA group assignments

Other languages

German

Ferriallanit-(La)

English

Ferriallanite-(La)

Russian

Ферриалланит-(La)

Traditional Chinese

富鐵鑭褐簾石

Simplified Chinese

富铁镧褐帘石

CNMNC (IMA)-Number

IMA 2010-066

CNMNC symbol

Symbol

Faln-La

Locations with GPS information