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Kolitschite

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Uwe Kolitsch
Formula:
PbZn0.5Fe3(AsO4)2(OH)6
Colour:
yellowish green
Lustre:
Adamantine
Hardness:
4
Specific Gravity:
4.674 (Calculated)
Crystal System:
Monoclinic
Name:
Kolitschite is named for Dr Uwe Kolitsch (b. 1966), Curator of Mineralogy at the Natural History Museum, Vienna, Austria, to recognise his contribution to mineralogy — in particular to the characterisation of new minerals (of which he has been involved in ~30) and crystallography, whilst also recognising his work on alunite-group minerals.
Related to minerals of the Dussertite Group (Alunite Supergroup), especially zincian kintoreite and segnitite.

The crystal structure differs from those of other alunite-type minerals in having zinc atoms ordered in trigonal bipyramidal sites in half of the available six-membered rings of the layers of octahedra. These sites are unoccupied in previously reported alunite-type structures. The ordering results in monoclinic symmetry and multiple twinning by 120° rotations about c*.

A solid-solution series extends between Pb[Zn0.25,□0.75]Fe3H(AsO4)2(OH)6 and the endmember Pb[Zn0.5,□0.5]Fe3(AsO4)2(OH)6.


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Classification of KolitschiteHide

Approved
Approval Year:
2008
8.BM.10

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
M : With medium-sized and large cations, (OH, etc.):RO4 = 4:1
42.7.4.8

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O

Physical Properties of KolitschiteHide

Adamantine
Transparency:
Transparent, Translucent
Colour:
yellowish green
Streak:
light yellow
Hardness:
Hardness Data:
Estimated
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
4.674 g/cm3 (Calculated)

Optical Data of KolitschiteHide

Type:
Biaxial (+)
Pleochroism:
Weak
Comments:
X = green to olive green, Y = green to olive green, Z = yellowish green to apple green.

Chemical Properties of KolitschiteHide

Formula:
PbZn0.5Fe3(AsO4)2(OH)6
IMA Formula:
Pb[Zn0.50.5]Fe3+3(AsO4)2(OH)6

Crystallography of KolitschiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 25.8898(6) Å, b = 14.8753(2) Å, c = 12.1700(2) Å
β = 110.681(1)°
Ratio:
a:b:c = 1.74 : 1 : 0.818
Unit Cell V:
4384.9 ų
Z:
16
Morphology:
{110} (prism) and {001} (pinacoid)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.114 (100)
6.034 (45)
2.280 (37)
3.719 (31)
2.844 (25)

Type Occurrence of KolitschiteHide

Synonyms of KolitschiteHide

Other Language Names for KolitschiteHide

German:Kolitschit
Spanish:Kolitschita

Relationship of Kolitschite to other SpeciesHide

Structurally related to group(s):
Dussertite GroupComprises arsenate members of Ca, Sr, Ba and Pb.

Related Minerals - Nickel-Strunz GroupingHide

8.BM.05Retzian-(Ce)Mn2+2Ce(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
8.BM.05Retzian-(La)(Mn2+,Mg)2(La,Ce,Nd)(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
8.BM.05Retzian-(Nd)Mn2+2(Nd,Ce,La)(AsO4)(OH)4Orth. mmm (2/m 2/m 2/m) : Pban
8.BM.10Paulkellerite(BiO)2Fe3+(PO4)(OH)2Mon. 2/m : B2/b
8.BM.15Brendelite(Bi3+,Pb)2(Fe3+,Fe2+)(PO4)O2(OH)Mon. 2/m : B2/m

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

42.7.4.1ArsenocrandalliteCaAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m)
42.7.4.2PhilipsbornitePbAl3(AsO4)2(OH)5 · H2OTrig.
42.7.4.3ArsenogoyaziteSrAl3(AsO4)(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
42.7.4.4SegnititePbFe3+3(AsO4)2(OH,H2O)6Trig. 3m (3 2/m) : R3m

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 KolitschiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Grey, I. E., Mumme, W. G., Bordet, P. & Mills, S. J. (2008): A new crystal-chemical variation of the alunite-type structure in monoclinic PbZn0.5Fe3(AsO4)2(OH)6. Canadian Mineralogist, 46(5), 1355–1364.
Mills, S. J., Grey, I. E., Mumme, W. G., Miyawaki, R., Matsubara, S., Bordet, P., Birch, W. D. & Raudsepp, M. (2008): Kolitschite, Pb[Zn0.5,□0.5]Fe3(AsO4)2(OH)6, a new mineral from the Kintore opencut, Broken Hill, New South Wales. Australian Journal of Mineralogy, 14(2), 63–67.
Mills, S. J. & Birch, W. D. (2009): Kolitschit, ein neues Arsenatmineral aus Australien. Mineralien-Welt, 21(1), 82-85 (in German).

Internet Links for KolitschiteHide

Localities for KolitschiteHide

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.
Australia (TL)
 
  • New South Wales
    • Yancowinna Co.
      • Broken Hill
        • Broken Hill South Mine (BHS Mine; South Mine)
Grey, I. E., Mumme, W. G., Bordet, P. & Mills, S. J. (2008) A new crystal-chemical variation of the alunite-type structure in monoclinic PbZn0.5Fe3(AsO4)2(OH)6. Canadian Mineralogist, 46(5), 1355–1364. Mills, S. J., Grey, I. E., Mumme, W. G., Miyawaki, R., Matsubara, S., Bordet, P., Birch, W. D. & Raudsepp, M. (2008) Kolitschite, Pb[Zn0.5,0.5]Fe3(AsO4)2(OH)6, a new mineral from Broken Hill, New South Wales, Australia, Australian Journal of Mineralogy, 14(2), 63–67; Mills, S. J. & Birch, W. D. (2009): Kolitschit, ein neues Arsenatmineral aus Australien. Mineralien-Welt 21 (1), 82-85 (in German).
Mineral and/or Locality  
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