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Ferroindialite

Pictures (2 Images total)

Ferroindialith
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Ferroindialith

Bellerberg, Eifel. BB 2,1mm

Collection: Mabu
Copyright: Mabu
Contribution: Mabu 2015-06-02
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Ferroindialith
Views (Image: 1396289312): 1157
Ferroindialith

Bellerberg, Eifel. BB 4,5mm

Collection: Mabu
Copyright: Mabu
Contribution: Mabu 2014-03-31
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

Collectors Summary

Color braunviolett bis blauviolett
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 7
Fracture muschelig
Crystal System hexagonal, P6/mcc

Chemism

Chem­ical formula

(Fe2+,Mg)2Al4Si5O18

Empir­ical formula (anal­y­sis)

(K0.06Na0.03)( Fe2+1.12Mg0.78Mn0.10)(Al3.79Fe3+1.12)Si4.98O18

Addi­tional chem. informa­tion

Beryl-Gruppe

Chem­ical com­po­si­tion

Aluminium, Eisen, Magnesium, Silicium, Sauerstoff

Unit weight: 682.696300674 u; Number of atoms in the formula: 29.98

Info

Empirical formula:

(K0.06Na0.03)(Fe1.12Mg0.78Mn0.10)(Al3.79Fe1.12)Si4.98O18

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

42.18

18

60.04

15.9994300

287.9897400

Sodium

Na

0.10

0.03

0.10

22.9897702

0.6896931

Magnesium

Mg

2.78

0.78

2.60

24.3050600

18.9579468

Aluminium

Al

14.98

3.79

12.64

26.9815382

102.2600298

Silicon

Si

20.49

4.98

16.61

28.0855300

139.8659394

Potassium

K

0.34

0.06

0.20

39.0983100

2.3458986

Manganese

Mn

0.80

0.1

0.33

54.9380499

5.4938050

Iron

Fe

18.32

2.24

7.47

55.8452000

125.0932480

Strunz 9th edi­tion incl. updates

9.CJ.05

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
J: ~[Si6O18]12- sechser-Einfachringe, ohne inselartig, komplexe [Anionen]
05:Beryll-Gruppe

IMA sta­tus

anerkannt - CNMNC Newsletter No. 16, August 2013

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Beryl group

Optical Properties

Color

braunviolett bis blauviolett

Streak color

weiß

Diaphane­ity (Trans­parency)

durchscheinend

Lus­tre

Glasglanz

max. Birefrin­gence

0.015

Birefringence chart\! Ferroindialite title=Birefringence chart Ferroindialite

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

1.539

RI value β

1.552

RI value γ / ε

1.554

Ri mean

1.548

2V angle

Biaxial (-) -43° (berechnet)

Ori­enta­tion

X = c

Dis­per­sion

schwach, r < v

Pleochro­ism

schwach, X = farblos, Z = blass violett

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6/mmm

Space Group number

192

Space Group

P6/mcc

Cell param­e­ters a (Å)

9.8759

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

9.3102

Cell param­e­ters a/b or c/a

0.943

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

786.399

X-Ray Pow­der Diffrac­tion

8.59(100), 4.094(27), 3.390(35), 3.147(19), 3.055(31), 2.657(12), 1.695(9)

XRD chart Ferroindialite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

7

Density (g/cm³)

2.66 (gemessen) 2.66 (berechnet)

2.883 ( ρ calc. Mineralienatlas )

Frac­ture

muschelig

Tenac­ity

spröde

(Co-)Type locality

(Co-)Type locality

Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)

Type mate­r­ial

Fersman Mineralogical Museum of the Russian Academy of Sciences, Moskau, Russaland, Russia

Col­lec­tion number of type mate­r­ial

4400/1

Par­a­ge­n­e­sis of type mate­r­ial

Sanidin, Phlogopit, Augit, Fluorapatit

Preface

Occurrences

Ferroindialith ist das Produkt einer Kontaktmetamorphose eines Xenolithen eines pelitischen Gesteins (???)

Asso­cia­tions

Sanidin, Phlogopit, Augit, Fluorapatit

Author (Name, Year)

Nikita V. Chukanov, Sergey M. Aksenov, Igor V. Pekov, Bernd Ternes, Willi Schüller, Dmitriy I. Belakovskiy, Konstantin V. Van und Günter Blass (2013)

References

Chukanov, N.V., Aksenov, S.M., Pekov, I.G., Ternes, B., Schüller, W., Belakovskiy, D.I., Van, K.V. and Blass, G. (2013) Ferroindialite, IMA 2013-016. CNMNC Newsletter No. 16, August 2013, page 2704; Mineralogical Magazine, 77, 2695-2709.

IMA group assignments

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Bazzite

Be3(Sc,Al)2Si6O18

hexagonal : 6/mmm : P6/mcc

9.CJ.05

Beryl

Be3Al2Si6O18

hexagonal : 6/mmm : P6/mcc

9.CJ.05

Avdeevite

(Na,Cs)(Be2Li)Al2(Si6O18)

hexagonal : 6/mmm : P63/mmc

9.CJ.05

'Morganite' (Var.v. Beryl)

Be3Al2Si6O18

hexagonal : 6/mmm : P6/mcc

9.CJ.05

'Aquamarine' (Var.v. Beryl)

Be3Al2Si6O18

hexagonal : 6/mmm : P6/mcc

9.CJ.05

Indialite

Mg2Al4Si5O18

hexagonal : 6/mmm : P6/mcc

9.CJ.05

Pezzottaite

Cs(Be2Li)Al2Si6O18

trigonal : 3m : R3c

9.CJ.05

Stoppaniite

Fe3+2Be3Si6O18·H2O

hexagonal : 6/mmm : P6/mcc

9.CJ.05

Ferroindialite

(Fe2+,Mg)2Al4Si5O18

hexagonal : 6/mmm : P6/mcc

9.CJ.05

CNMNC (IMA)-Number

IMA 2013-016

CNMNC symbol

Symbol

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German pages

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