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Kobokoboite

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About KobokoboiteHide

Formula:
Al6(PO4)4(OH)6 · 11H2O
Colour:
pearly white
Lustre:
Pearly
Hardness:
2
Specific Gravity:
2.21
Crystal System:
Triclinic
Name:
Named in 2010 by Stuart J. Mills, William D. Birch, Anthony R. Kampf, A. R. and L. van Wambeke (2010) for the original locality.
Related to afmite, matulaite and planerite.


Classification of KobokoboiteHide

Approved
Approval Year:
2009

Physical Properties of KobokoboiteHide

Pearly
Transparency:
Transparent, Translucent
Colour:
pearly white
Streak:
white
Hardness:
Hardness Data:
Estimated
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
2.21(3) g/cm3 (Measured)    2.287 g/cm3 (Calculated)

Optical Data of KobokoboiteHide

Type:
Biaxial (-)
Pleochroism:
Non-pleochroic

Chemical Properties of KobokoboiteHide

Formula:
Al6(PO4)4(OH)6 · 11H2O
IMA Formula:
Al6(PO4)4(OH)6 · 11H2O

Crystallography of KobokoboiteHide

Crystal System:
Triclinic
Cell Parameters:
a = 7.460(1) Å, b = 7.737(1) Å, c = 12.385(5) Å
α = 102.79(2)°, β = 90.20(3)°, γ = 116.33(2)°
Ratio:
a:b:c = 0.964 : 1 : 1.601
Unit Cell V:
620.6 ų
Z:
1
Comment:
P1 or P-1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.990 (100)
6.868 (45)
3.552 (39)
6.006 (33)
3.081 (29)

Type Occurrence of KobokoboiteHide

General Appearance of Type Material:
thick crusts and coatings
Place of Conservation of Type Material:
Museum Victoria
Geological Setting of Type Material:
Granite pegmatites
Associated Minerals at Type Locality:

Synonyms of KobokoboiteHide

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 KobokoboiteHide

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.

Internet Links for KobokoboiteHide

Localities for KobokoboiteHide

ⓘ - 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 (TL)
 
  • Sud-Kivu
    • Mwenga
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.
France
 
  • Occitanie
    • Tarn
      • Castelnau-de-Brassac
        • Fumade
Favreau, G., Bernadi, G. & Gayraud, L. (2013): Fumade (Tarn): descriptions complémentaires des espèces minérales. Le Cahier des Micromonteurs, 119, 3-25.
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
Mineral and/or Locality  
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