Kolitschite
A valid IMA mineral species
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About Kolitschite
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 zinc-bearing kintoreite and segnitite.
XRD methods are necessary to distinguish kolitschite from zinc-bearing segnitite (Mills et al., 2008).
The pseudo-rhombohedral, monoclinic 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.
XRD methods are necessary to distinguish kolitschite from zinc-bearing segnitite (Mills et al., 2008).
The pseudo-rhombohedral, monoclinic 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.
Unique Identifiers
Mindat ID:
38994
Long-form identifier:
mindat:1:1:38994:9
GUID
(UUID V4):
(UUID V4):
faa5169f-bee8-4878-96cb-0e560da50591
IMA Classification of Kolitschite
Classification of Kolitschite
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
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
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Klt | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Kolitschite
Adamantine
Transparency:
Transparent, Translucent
Colour:
yellowish green
Streak:
light yellow
Hardness:
4 on Mohs scale
Hardness Data:
Estimated
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
4.674 g/cm3 (Calculated)
Optical Data of Kolitschite
Type:
Biaxial (+)
Pleochroism:
Weak
Comments:
X = green to olive green, Y = green to olive green, Z = yellowish green to apple green.
Chemistry of Kolitschite
Mindat Formula:
PbZn0.5Fe3(AsO4)2(OH)6
Crystallography of Kolitschite
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)°
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)
Twinning:
"All crystals examined were twinned by 120° rotations about the pseudohexagonal ch axis (see Grey et al., 2008)."
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0006197 | Kolitschite | Grey I E, Mumme W G, Bordet P (2008) A new crystal-chemical variation of the alunite-type structure in monoclinic PbZn0.5Fe3(AsO4)2(OH)6 The Canadian Mineralogist 46 1355-1364 |  | 2008 | Broken Hill, Australia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.114 Å | (100) |
| 6.034 Å | (45) |
| 2.280 Å | (37) |
| 3.719 Å | (31) |
| 2.844 Å | (25) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Kolitschite
Place of Conservation of Type Material:
Museum Victoria, cat. no. M41714.
Associated Minerals at Type Locality:
Synonyms of Kolitschite
Other Language Names for Kolitschite
German:Kolitschit
Spanish:Kolitschita
Relationship of Kolitschite to other Species
Structurally related to group(s):
| Dussertite Group | Comprises arsenate members of Ca, Sr, Ba and Pb. |
Related Minerals - Strunz-mindat Grouping
| 8.BM. | Betpakdalite-NaNa | [Na2(H2O)16Na(H2O)6][Mo8As2Fe3+3O33(OH)4] |
| 8.BM. | Gunmaite | (Na2Sr)Sr2Al10(PO4)4F14(OH)12 |
| 8.BM.05 | Retzian-(Ce) | Mn2+2Ce(AsO4)(OH)4 |
| 8.BM.05 | Retzian-(La) | (Mn2+,Mg)2(La,Ce,Nd)(AsO4)(OH)4 |
| 8.BM.05 | Retzian-(Nd) | Mn2+2(Nd,Ce,La)(AsO4)(OH)4 |
| 8.BM.10 | Paulkellerite | (BiO)2Fe3+(PO4)(OH)2 |
| 8.BM.15 | Brendelite | (Bi3+,Pb)2(Fe3+,Fe2+)(PO4)O2(OH) |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Kolitschite
mindat.org URL:
https://www.mindat.org/min-38994.html
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References for Kolitschite
Reference List:
Localities for Kolitschite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Australia (TL) | |
| Grey et al. (2008) +2 other references |
Spain | |
| Christian Rewitzer collection - SEM-EDS ... |
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Kintore opencut, Broken Hill South Mine, Broken Hill, Broken Hill district, Yancowinna Co., New South Wales, Australia