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Ferriallanite-(La)

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schwarzer dicktafelig-blockiger Ferriallanit-La
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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

 
Epidote supergroup
 
 
 

 
 
Allanite group
{A12+A23+M13+M23+M32+}(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Allanite-(Ce)
CaCe(Al2Fe2+)(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Allanite-(La)
CaLa(Al2Fe2+)(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Allanite-(Nd)
CaNd(Al2Fe2+)(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Allanite-(Y)
CaY(Al2Fe2+)(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Dissakisite-(Ce)
Ca(Ce,La)(Mg,Fe2+)(Al,Fe3+)2[O|OH|SiO4|Si2O7]
monoklin
P21/m

 
 
 
Dissakisite-(La)
CaLa(Al2Mg)[Si2O7][SiO4]O(OH)
monoklin
P2/m

 
 
 
Ferriakasakaite-(Ce)
CaCeFe3+AlMn2+(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Ferriakasakaite-(La)
CaLaFe3+AlMn2+(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Ferriallanite-(Ce)
Ca(Ce,La,Nd,Ca)Fe2+(Fe3+,Al,Ti4+)2[O|OH|SiO4|Si2O7]
monoklin
P21/m

 
 
 
Ferriallanite-(La)
Ca(La,Ce,Th)(Fe3+,Al)(Al,Fe3+)(Fe2+,Mn,Ti,Mg)(SiO4)(Si2O7)O(OH)
monoklin
P21/m

 
 
 
Ferriandrosite-(La)
Mn2+LaFe3+AlMn2+(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Manganiakasakaite-(La)
CaLaMn3+AlMn2+(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Manganiandrosite-(La)
(Mn2+,Ca)(La,Ce,Nd)Mn2+(Al,Mn3+)2[O|OH|SiO4|Si2O7]
monoklin
P21/m

 
 
 
Uedaite-(Ce)
Mn2+CeAl2Fe2+(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Vanadoallanite-(La)
CaLa3+V3+AlFe2+(Si2O7)(SiO4)O(OH)
monoklin
P21/m

 
 
 
Vanadoandrosite-(Ce)
(Mn2+,Ca)(REE)V3+AlMn2+(Si2O7)(SiO4)O(OH)
monoklin
P21/m

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Actuality: 21. May 2022 - 23:17:43

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

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