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Magnesiotaaffeite-2N'2S

Pictures (6 Images total)

Magnesiotaaffeit-2N'2S
Views (File:
1223154817
): 8997
Magnesiotaaffeit-2N'2S
Größe: 1,3 x 1,3 x 0,6 cm; 9,63 Karat; Fundort: Ratnapura, Sabaragamuwa Province, Sri Lanka
Copyright: Rob Lavinsky; Contribution: Hg
Location: Sri Lanka/Sabaragamuwa, Provinz/Rathnapura (Ratnapura), Distrikt
Mineral: Magnesiotaaffeite-2N'2S
Image: 1223154817
Rating: 7 (votes: 3)
License: Usage for Mineralienatlas project only
Magnesiotaaffeit-2N'2S

Größe: 1,3 x 1,3 x 0,6 cm; 9,63 Karat; Fundort: Ratnapura, Sabaragamuwa Province, Sri Lanka
Copyright: Rob Lavinsky
Contribution: Hg 2008-10-04
Locality: Rathnapura (Ratnapura), Distrikt / Sabaragamuwa, Provinz / Sri Lanka
Taaffeit
Views (File:
1205776397
): 6770
Taaffeit
Facetierter Taaffeit , 1,14ct
Copyright: JHM; Contribution: JHM
Location: Sri Lanka/Sabaragamuwa, Provinz/Rathnapura (Ratnapura), Distrikt
Mineral: Magnesiotaaffeite-2N'2S
Image: 1205776397
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Taaffeit

Facetierter Taaffeit , 1,14ct

Copyright: JHM
Contribution: JHM 2008-03-17
Locality: Rathnapura (Ratnapura), Distrikt / Sabaragamuwa, Provinz / Sri Lanka
Magnesiotaafeit-2N2S
Views (File:
1279841327
): 8431
Magnesiotaafeit-2N2S
Größe: 10,2 x 6,4 x 3,6 mm; Fundort: Ohngaing, Mogok, Sagaing, Mandalay Division, Myanmar
Copyright: Pavel M. Kartashov; Contribution: Philip Blümner
Location: Myanmar (Burma)/Mandalay-Division/Pyin-Oo-Lwin, Distrikt/Mogok Township/Mogok, Tal/Ohngaing
Mineral: Magnesiotaaffeite-2N'2S
Image: 1279841327
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Magnesiotaafeit-2N2S

Größe: 10,2 x 6,4 x 3,6 mm; Fundort: Ohngaing, Mogok, Sagaing, Mandalay Division, Myanmar
Copyright: Pavel M. Kartashov
Contribution: Philip Blümner 2010-07-22
Locality: Ohngaing / Mogok, Tal / Mogok Township / Pyin-Oo-Lwin, Distrikt / Mandalay-Division / Myanmar (Burma)
Taaffeit
Views (File:
1121942118
): 9327
Taaffeit
3,92ct (analysiert); Abmessungen: 10mm x 10mm x 4mm; Fundort: Rathnapura, Sri Lanka
Copyright: JHM; Contribution: JHM
Location: Sri Lanka/Sabaragamuwa, Provinz/Rathnapura (Ratnapura), Distrikt
Mineral: Magnesiotaaffeite-2N'2S
Image: 1121942118
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Taaffeit

3,92ct (analysiert); Abmessungen: 10mm x 10mm x 4mm; Fundort: Rathnapura, Sri Lanka

Copyright: JHM
Contribution: JHM 2005-07-21
Locality: Rathnapura (Ratnapura), Distrikt / Sabaragamuwa, Provinz / Sri Lanka
Magnesiotaaffeit-2N’2S
Views (File:
1109790003
): 9436
Magnesiotaaffeit-2N’2S
Hellblauer, hexagonaler Kristall mit typischer zonarer Streifung; Größe 13 mm; Fundort: Aus einer Illam-Grube nahe Rathnapura, Sri Lanka (ehemals Ceylon); Fund 1991
Copyright: Collector; Contribution: Mineralienatlas
Collection: Collector
Location: Sri Lanka/Sabaragamuwa, Provinz/Rathnapura (Ratnapura), Distrikt
Mineral: Magnesiotaaffeite-2N'2S
Image: 1109790003
Rating: 3 (votes: 1)
License: Usage for Mineralienatlas project only
Magnesiotaaffeit-2N’2S

Hellblauer, hexagonaler Kristall mit typischer zonarer Streifung; Größe 13 mm; Fundort: Aus einer Illam-Grube nahe Rathnapura, Sri Lanka (ehemals Ceylon); Fund 1991
Collection: Collector
Copyright: Collector
Contribution: Mineralienatlas 2005-03-02
Locality: Rathnapura (Ratnapura), Distrikt / Sabaragamuwa, Provinz / Sri Lanka

Collectors Summary

Color Hell- dunkelblau, violett, rosa, braun, selten farblos und rot
Lustre Glasglanz
Hardness (Mohs) 8 - 8.5
Fracture muschelig
Crystal System hexagonal, P63mc
Morphology Idiomorphe Kristalle

Chemism

Chemical formula

Mg3Al8BeO16

Chemical composition

Aluminium, Beryllium, Magnesium, Sauerstoff

Unit weight: 553.7705479 u; Number of atoms in the formula: 28

Info

Empirical formula:

Mg3Al8BeO16

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Beryllium

Be

1.63

1

3.57

9.0121823

9.0121823
Oxygen

O

46.23

16

57.14

15.9994300

255.9908800
Magnesium

Mg

13.17

3

10.71

24.3050600

72.9151800
Aluminium

Al

38.98

8

28.57

26.9815382

215.8523056

Strunz 9th edition incl. updates

4.FC.25

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
F: Hydroxide (ohne V oder U)
C: Hydroxide mit OH, ohne H2O; eckenverknüpfte Oktaeder
25:

Classification by Hölzel

4.CE.162

4: OXIDES
C: R2O3 Sesquioxides
E: Other complex Oxides, mostly hextrig
1: Högbomite-Group

IMA status

Originalname Taaffeit (Anderson u.w., 1951). Auch als Taprobanit bekannt (diskreditiert). 2002 von Armbruster umbenannt.

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Högbomite supergroup  ⇒ Taaffeite group

Optical Properties

Color

Hell- dunkelblau, violett, rosa, braun, selten farblos und rot

Lustre

Glasglanz

max. Birefringence

0.004
Birefringence chart\! Magnesiotaaffeite-2N'2S title=Birefringence chart Magnesiotaaffeite-2N'2S

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

1.717

RI value γ / ε

1.721

Ri mean

1.728

2V angle

Uniaxial (-)

Pleochroism

gelbrose bis kaminrot

Optical Data Luminescence

Color LW-UV (365nm)

  

rot

LW-UV Intensity

schwach

Color SW-UV (254nm)

  

gelblich weiß

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

hexagonal

Class (H-M)

6mm

Space Group number

186

Space Group

P63mc

Cell parameters a (Å)

5.687

Cell parameters b (Å)

-

Cell parameters c (Å)

18.34

Cell parameters a/b or c/a

3.225

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volume (ų)

513.684

X-Ray Powder Diffraction

4.57(50),
3.36(50),
2.86(50),
2.61(70),
2.43(100),
2.05(80),
1.476(70),
1.428(80)
XRD chart Magnesiotaaffeite-2N'2S

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

Morphology

Idiomorphe Kristalle

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

8 - 8.5

Density (g/cm³)

3.60-3.61

3.58 ( ρ calc. Mineralienatlas )

Fracture

muschelig

(Co-)Type locality

(Co-)Type locality

Sri Lanka/Sabaragamuwa, Provinz/Rathnapura (Ratnapura), Distrikt/Rathnapura (Ratnapura)/Niriella

Preface

Occurrences

Im Illam -(Schlamm) von Sri Lanka

Rareness

Relatively rare

Name from

Name original benannt Taaffeit nach Count Edward Charles Taafe, Gemologe in Dublin (b. 1898), Er fand das Mineral 1945.

Collector information

Facettierte Steine sind schwer vom Spinell zu unterscheiden.

Additional Information

Benannt nach Graf Edward Charles Taafe, Gemologe aus Dublin (*1968), der das Mineral 1945 entdeckte.

References

Mineralogical Magazine 29 (1951), 765-772.

Mineralogical Record 22 (1991), 343.

Neues Jahrbuch für Mineralogie, Abhandlungen 146 (1983), 15-28.

Neues Jahrbuch für Mineralogie, Monatshefte (1983), 393-402.

Handbook of Mineralogy (Anthony et al.), 3 (1997), 546.

European Journal of Mineralogy 14 (2002), 389-395.

IMA group assignments

 
Högbomite supergroup
 
 
 

 
 
Taaffeite group
 
 
 

 
 
 
Ferrotaaffeite-2N’2S
Be(Fe,Mg,Zn)3Al8O16
hexagonal
P63mc

 
 
 
Ferrotaaffeite-6N'3S
(Fe2+,Zn,Mg)2Al6BeO12
trigonal
R3m

 
 
 
Magnesiotaaffeite-2N'2S
Mg3Al8BeO16
hexagonal
P63mc

 
 
 
Magnesiotaaffeite-6N'3S
(Mg,Fe2+,Zn)2Al6BeO12
trigonal
R3m

Refresh list

Actuality: 14. Jan 2025 - 10:18:23

Other languages

German

Magnesiotaaffeit-2N'2S

English

Magnesiotaaffeite-2N'2S

French

Magnesiotaaffeite-2N'2S

Spanish

Magnesiotaaffeíta-2N'2S

Russian

Магнезиотааффеит-2N'2S

Alternative Name

German

Magnesiotaaffeit-2N2S

English

Magnesiotaaffeite-2N2S

English

Magnesiotaaffeite-2N’2S

English

Taafeite-8H

Taaffeit

by Anderson etc. 1951

English

Taprobanite

diekreditiert

CNMNC symbol

Symbol

Mtf-2N'2S

Locations with GPS information

IDs

GUSID (Global unique identifier short form) lKSyzTtJYEaB9xwgIH9j7Q
GUID (Global unique identifier) CDB2A494-493B-4660-81F7-1C20207F63ED
Database ID 2316