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Afmite

This page kindly sponsored by AF Microminéralogie
Logo AFM
Formula:
Al3(OH)4(H2O)3(PO4)(PO3OH) · H2O
Crystal System:
Triclinic
Name:
Named after the Association Française de Microminéralogie (AFM)
Related to planerite and kobokoboite.
Structurally related to tinticite and isotypic kamarizaite.




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Classification of AfmiteHide

Approved
Approval Year:
2010
8.DD.15

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
D : With only medium-sized cations, (OH, etc.):RO4= 2:1
42.9.3.6

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O

Chemical Properties of AfmiteHide

Formula:
Al3(OH)4(H2O)3(PO4)(PO3OH) · H2O

Crystallography of AfmiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 7.386(3) Å, b = 7.716(3) Å, c = 11.345(4) Å
α = 99.773(5)°, β = 91.141(6)°, γ = 115.58(5)°
Ratio:
a:b:c = 0.957 : 1 : 1.47
Unit Cell V:
571.55 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.130(100)
6.813(30)
5.499(62)
4.029(24)
3.532(65)
3.087(41)
2.918(43)
2.466(21)

Type Occurrence of AfmiteHide

Place of Conservation of Type Material:
Natural History Museum of Los Angeles County, Los Angeles, catalogue number 55425

Synonyms of AfmiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Matulaite2 photos of Afmite associated with Matulaite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.DD.05ChenevixiteCu2Fe3+2(AsO4)2(OH)4Mon. 2/m : P21/m
8.DD.05LuetheiteCu2Al2(AsO4)2(OH)4Mon. 2/m : P21/m
8.DD.10Akrochordite(Mn2+,Mg)5(AsO4)2(OH)4 · 4H2OMon. 2/m : P21/b
8.DD.10GuanacoiteCu2Mg3(AsO4)2(OH)4 · 4H2OMon. 2/m : P21/b
8.DD.15Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15ChalcosideriteCuFe3+6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15Faustite(Zn,Cu)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2OTric. 1 : P1
8.DD.15TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.20ChildreniteFe2+Al(PO4)(OH)2 · H2OOrth. mm2 : Ccc2
8.DD.20EosphoriteMn2+Al(PO4)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmca
8.DD.20Ernstite(Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2OMon.

Related Minerals - Dana Grouping (8th Ed.)Hide

42.9.3.1TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2OTric. 1 : P1
42.9.3.2CoeruleolactiteTric. 1 : P1
42.9.3.3Faustite(Zn,Cu)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
42.9.3.4ChalcosideriteCuFe3+6(PO4)4(OH)8 · 4H2OTric. 1 : P1
42.9.3.5Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
42.9.3.6PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2OTric. 1 : P1

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for AfmiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.
Anthony R. Kampf, Stuart J. Mills, George R. Rossman, Ian M. Steele, Joseph J. Pluth and Georges Favreau (2011) Afmite, Al3(OH)4(H2O)3(PO4)(PO3OH)•H2O, a new mineral from Fumade, Tarn, France: description and crystal structure. European Journal of Mineralogy 23, 269-277.

Internet Links for AfmiteHide

Localities for AfmiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Democratic Republic of the Congo
 
  • Sud-Kivu
    • Mwenga
Mills et al (2010); Anthony R. Kampf, Stuart J. Mills, George R. Rossman, Ian M. Steele, Joseph J. Pluth and Georges Favreau (2011): Afmite, Al3(OH)4(H2O)3(PO4)(PO3OH)•H2O, a new mineral from Fumade, Tarn, France: description and crystal structure. European Journal of Mineralogy 23, 269-277.
France (TL)
 
  • Occitanie
    • Tarn
      • Castelnau-de-Brassac
        • Fumade
Anthony R. Kampf, Stuart J. Mills, George R. Rossman, Ian M. Steele, Joseph J. Pluth and Georges Favreau (2011): Afmite, Al3(OH)4(H2O)3(PO4)(PO3OH)•H2O, a new mineral from Fumade, Tarn, France: description and crystal structure. European Journal of Mineralogy 23, 269-277.
USA
 
  • Pennsylvania
    • Northampton Co.
      • Lower Saucon Township
        • Hellertown
Anthony R. Kampf, Stuart J. Mills, George R. Rossman, Ian M. Steele, Joseph J. Pluth and Georges Favreau (2011): Afmite, Al3(OH)4(H2O)3(PO4)(PO3OH)•H2O, a new mineral from Fumade, Tarn, France: description and crystal structure. European Journal of Mineralogy 23, 269-277.; Kampf, A.R., Mills, S.J., Rumsey, M.S., Spratt, J. and Favreau, G. (2012) The crystal structure determination and redefinition of matulaite, Fe3+Al7(PO4)4(PO3OH)2(OH)8(H2O)8•8H2O. Mineralogical Magazine, 76(3), 517–534
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