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Afmite

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Afmit
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Afmit

Fundort: Fumade, Castelnau de Brassac, Tarn, Frankreich. Ein Stück mit weißen, blättrigen Kristallen von der Typlokalität. Größe: 2,2 x 1 x 1,5 cm

Copyright: mineraliensammlung.com
Contribution: skibbo 2013-05-04

Collectors Summary

Color weiß
Streak color weiß
Lustre Perlmuttglanz
Hardness (Mohs) 1.5
Cleavages vollkommen {001}, gut {010} und {1-10}
Fracture unregelmäßig
Crystal System triklin, P1

Chemism

Chemical formula

Al3(OH)4(H2O)3(PO4)(PO3OH)·H2O

Additional chem. information

artverwandt mit Planerit und Kobokoboit

Chemical composition

Aluminium, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 411.986328 u; Number of atoms in the formula: 34

Info

Empirical formula:

Al3(OH)4(H2O)3(PO4)(PO3OH)·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

3.18

13

38.24

1.0079470

13.1033110

Oxygen

O

62.14

16

47.06

15.9994300

255.9908800

Aluminium

Al

19.65

3

8.82

26.9815382

80.9446146

Phosphorus

P

15.04

2

5.88

30.9737612

61.9475224

Strunz 9th edition incl. updates

8.DD.15

8: Phosphate, Arsenate, Vanadate
D: Phosphate, mit weiteren Anionen, mit H2O
D: Mit ausschließlich mittelgroßen [Kationen], (OH, etc.):RO4 = 2:1
15:Türkis-Gruppe

Lapis Classification

VII/D.15-003

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
D: Wasserhaltige Phosphate, mit fremden Anionen
15: Mittelgroße Kationen: Cu-Zn-Mn-Al-Fe; Türkis-Gruppe

Classification by Hölzel

8.DG.395

8: PHOSPHATES ARSENATES VANADATES
D: Phosphates (+Anions +Water)
G: TurquoiseChildrenite-Group P/OH=0.5

Dana 8th edition

42.09.03.06

42: Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
09: Hydrated Phosphates, etc., Containing Hydroxyl or Halogen where (A)3 (XO4)2 Zq · x(H2O)
03: Turquoise Group

IMA status

anerkannt - CNMNC Newsletter, July 2010

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß

Streak color

weiß

Diaphaneity (Transparency)

durchsichtig, durchscheinend

Lustre

Perlmuttglanz

max. Birefringence

0.012

Birefringence chart\! Afmite title=Birefringence chart Afmite

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

1.554

RI value β

1.558

RI value γ / ε

1.566

Ri mean

1.559

2V angle

Biaxial (+) 70° (gemessen) 71° (berechnet)

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

7.386

Cell parameters b (Å)

7.716

Cell parameters c (Å)

11.345

Cell parameters a/b or c/a

0.957

Cell parameters c/b

1.470

Cell parameters α

99.77

Cell parameters β

91.13

Cell parameters γ

115.58

Z

2

Volumne (ų)

571.571

Kristall structure

aufgeklärt, siehe Kampf, A.R., et al. (2011)

X-Ray Powder Diffraction

11.130(100), 6.813(30), 5.499(62), 4.029(24),3.532(65), 3.087(41), 2.918(43), 2.466(21)

XRD chart Afmite

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)

1.5

VHN (Hardness Vickers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.39 (gemessen) 2.391 (berechnet)

2.394 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {001}, gut {010} und {1-10}

Fracture

unregelmäßig

Tenacity

flexibel, aber nicht elastisch

(Co-)Type locality

(Co-)Type locality

Frankreich/Okzitanien (Occitanie), Region/Tarn, Département/Castelnau-de-Brassac/Fumade/Phosphatvorkommen

Type material

Natural History Museum of Los Angeles County, Los Angeles

Collection number of type material

Katalognummer 55425

Name from

Association Française de Microminéralogie (AFM)

Author (Name, Year)

Kampf, A.R., et al. (2011)

References

Anthony R. Kampf, Stuart J. Mills, George R. Rossman, Ian M. Steele, Joseph J. Pluth, Georges Favreau: Afmite, Al3(OH)4(H2O)3(PO4)(PO3OH)•H2O, a new mineral from Fumade, Tarn, France: description and crystal structure. Eur J Mineral 23 (2011) S.269-277.

Mills, S. J., Birch, W. D., Kampf, A. R. & van Wambeke, L. (2010) Kobokoboite, Al6(PO4)4(OH)6•11H2O, a new mineral from the Kobokobo pegmatite, Democratic Republic of the Congo. European Journal of Mineralogy, 22(2), 305–308.

Kampf, A.R., Favreau, G., Steele, I.M., Mills, S.J., Rossman, G.R. and Pluth, J.J. (2010) Afmite, IMA 2005-025a. CNMNC Newsletter, August 2010, page 797; Mineralogical Magazine, 74, 797–800

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

Afmite

Al3(OH)4(H2O)3(PO4)(PO3OH)·H2O

triklin : 1 : P1

8.DD.15

Chalcosiderite

CuFe63+(PO4)4(OH)8·4H2O

triklin : 1 : P1

8.DD.15

Faustite

(Zn,Cu)Al6(PO4)4(OH)8·4H2O

triklin : 1 : P1

8.DD.15

Turquoise

CuAl6(PO4)4(OH)8·4H2O

triklin : 1 : P1

8.DD.15

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

Afmite

Al3(OH)4(H2O)3(PO4)(PO3OH)·H2O

triklin : 1 : P1

VII/D.15-003

Kobokoboite

Al6(PO4)4(OH)6∙11H2O

triklin : 1, 1 : P1, P1

VII/D.15-005

Planerite

Al6(PO4)2(PO3OH)2(OH)8·4H2O

triklin : 1 : P1

VII/D.15-010

Aheylite

(Fe2+,Zn)Al6(PO4)4(OH)8·4H2O

triklin, triklin : 1, 1 : P1, P1

VII/D.15-030

Turquoise

CuAl6(PO4)4(OH)8·4H2O

triklin : 1 : P1

VII/D.15-040

Faustite

(Zn,Cu)Al6(PO4)4(OH)8·4H2O

triklin : 1 : P1

VII/D.15-050

Chalcosiderite

CuFe63+(PO4)4(OH)8·4H2O

triklin : 1 : P1

VII/D.15-060

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

Turquoise

CuAl6(PO4)4(OH)8·4H2O

triklin : 1 : P1

8.DG.300

Chalcosiderite

CuFe63+(PO4)4(OH)8·4H2O

triklin : 1 : P1

8.DG.320

Faustite

(Zn,Cu)Al6(PO4)4(OH)8·4H2O

triklin : 1 : P1

8.DG.340

Aheylite

(Fe2+,Zn)Al6(PO4)4(OH)8·4H2O

triklin, triklin : 1, 1 : P1, P1

8.DG.360

Planerite

Al6(PO4)2(PO3OH)2(OH)8·4H2O

triklin : 1 : P1

8.DG.380

'Coeruleolactite'

8.DG.385

Kobokoboite

Al6(PO4)4(OH)6∙11H2O

triklin : 1, 1 : P1, P1

8.DG.390

Afmite

Al3(OH)4(H2O)3(PO4)(PO3OH)·H2O

triklin : 1 : P1

8.DG.395

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Burangaite

NaFe2+Al5(PO4)4(OH)6·2H2O

monoklin : 2/m : C2/c

42.09.01.01

Dufrénite

Ca0.5Fe2+Fe3+5(PO4)4(OH)6·2H2O

monoklin : 2/m : C2/c

42.09.01.02

Natrodufrénite

Na(Fe3+,Fe2+)(Fe3+,Al)5(PO4)4(OH)6·2H2O

monoklin : 2/m : C2/c

42.09.01.03

Souzalite

(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6·2H2O

triklin : 1 : P1

42.09.02.01

Gormanite

Fe2+3Al4(PO4)4(OH)6·2H2O

triklin : 1 : P1

42.09.02.02

Andyrobertsite

K(Cd,Ca,Mn)Cu5[AsO2(OH)2|(AsO4)4]·2H2O

monoklin : 2/m : P21/m

42.09.02.03

Turquoise

CuAl6(PO4)4(OH)8·4H2O

triklin : 1 : P1

42.09.03.01

Faustite

(Zn,Cu)Al6(PO4)4(OH)8·4H2O

triklin : 1 : P1

42.09.03.03

Chalcosiderite

CuFe63+(PO4)4(OH)8·4H2O

triklin : 1 : P1

42.09.03.04

Aheylite

(Fe2+,Zn)Al6(PO4)4(OH)8·4H2O

triklin, triklin : 1, 1 : P1, P1

42.09.03.05

Planerite

Al6(PO4)2(PO3OH)2(OH)8·4H2O

triklin : 1 : P1

42.09.03.06

Afmite

Al3(OH)4(H2O)3(PO4)(PO3OH)·H2O

triklin : 1 : P1

42.09.03.06

Sampleite

NaCaCu5(PO4)4Cl·5H2O

monoklin : 2/m : P21/n, P21/c

42.09.04.01

Lavendulan

NaCaCu5(AsO4)4Cl·5H2O

monoklin : 2/m : P221/n1

42.09.04.02

Zdenekite

NaPbCu5[Cl|(AsO4)4]·5H2O

monoklin : 2/m : P21/n

42.09.04.03

Mahnertite

(Na,Ca)Cu3[Cl|(AsO4)2]·5H2O

tetragonal : 4/mmm : I4/mmm

42.09.04.04

Lemanskiite

NaCaCu5[Cl|(AsO4)4]·5H2O

tetragonal, tetragonal : 422, 422 : P4122, P4322

42.09.04.05

Santafeite

(Na,Ca,Sr)3(Mn2+,Fe3+)2Mn24+[(OH)5|(VO4)4]·2H2O

orthorhombisch : 222 : B2212

42.09.06.01

Ogdensburgite

Ca2(Zn,Mn)Fe43+(AsO4)4(OH)6·6H2O

42.09.07.01

Dewindtite

Pb3[H(UO2)3O2(PO4)2]2·12H2O

orthorhombisch : mmm : Bmmb

42.09.08.01

Other languages

Russian

Афмит

German

Afmit

English

Afmite

IMA Number

IMA 2005-025a

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Afmit
Google-Bilder-Suche - search for: Afmit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Afmit

English pages

Mindat - search for: Afmite
Webmineral - search for: Afmite
Handbook-of-Mineralogy - search for: Afmite
RRUFF Database-of-Raman-spectroscopy - search for: Afmite
American-Mineralogist-Crystal-Structure-Database - search for: Afmite
Athena - search for: Afmite

Russian pages

Webmineral.ru - search for: Афмит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Afmit
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