Kozłowskiite
A valid IMA mineral species
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Andrzej J. Kozłowski
Formula:
Ca4Fe2+2Sn3(Si2O7)2(Si2O6OH)2
Formula according to CNMNC Newsletter 70, establishment of kristansenite group.
Colour:
Pale brownish (in tiny pieces)
Specific Gravity:
3.775 (Calculated)
Crystal System:
Triclinic
Member of:
Name:
Named after professor Andrzej Janusz Kozłowski, Ph.D. (21 November 1946, Warsaw, Poland), Institute of Geochemistry, Mineralogy and Petrology, Faculty of Geology, Warsaw University, Poland. Known for his studies devoted to mineralogy of both pegmatites (including these at Szklarska Poręba and its vicinity) and fluid inclusions.
Type Locality:
Isostructural with:
The Fe2+Sn3-analogue of silesiaite.
Crystal structure details:
* 3/4 of the M sites are Sn-dominant,
* relatively strong hydrogen bonds are present
Crystal structure details:
* 3/4 of the M sites are Sn-dominant,
* relatively strong hydrogen bonds are present
Unique Identifiers
Mindat ID:
55754
Long-form identifier:
mindat:1:1:55754:0
GUID
(UUID V4):
(UUID V4):
7fdaf1a0-27b0-47c5-9425-58ba22687aaf
IMA Classification of Kozłowskiite
Approved
IMA Formula:
Ca4Fe2+Sn3(Si2O7)2(Si2O6OH)2
Approval year:
2021
First published:
2022
Type description reference:
Classification of Kozłowskiite
9.BC.
9 : SILICATES (Germanates)
B : Sorosilicates
C : Si2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordination
9 : SILICATES (Germanates)
B : Sorosilicates
C : Si2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordination
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 |
|---|---|---|
| Kzw | 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 Kozłowskiite
Colour:
Pale brownish (in tiny pieces)
Density:
3.775 g/cm3 (Calculated)
Chemistry of Kozłowskiite
Mindat Formula:
Ca4Fe2+2Sn3(Si2O7)2(Si2O6OH)2
Formula according to CNMNC Newsletter 70, establishment of kristansenite group.
Formula according to CNMNC Newsletter 70, establishment of kristansenite group.
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| SiO2 | 39.46 % |
| ZrO2 | 0.35 % |
| SnO2 | 31.13 % |
| Al2O3 | 0.35 % |
| Sc2O3 | 2.56 % |
| Fe2O3(tot) | 5.06 % |
| MnO | 0.71 % |
| CaO | 18.42 % |
| H2O(calc.) | 1.48 % |
| Total: | 99.52 % |
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 1 | Ca4.00(Sn2.652Sc0.47Fe2+0.43Fe3+0.34Mn2+0.12Al0.08Zr0.03)?4.00(Si2.00O7)2(Si2.00O6OH)2 |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Szklarska Poręba Huta granite quarry, Szklarska Poręba, Karkonosze County, Lower Silesian Voivodeship, Poland | by electron microprobe; Fe2O3calc. = 2.26%, FeOcalc. = 2.52%; empirical formula basis: 26O + 2(OH) and 16 cations (Z = 2) |
Crystallography of Kozłowskiite
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Cell Parameters:
a = 10.0183(2) Å, b = 8.3861(1) Å, c = 13.3395(2) Å
α = 89.956(1)°, β = 109.039(2)°, γ = 89.979(1)°
α = 89.956(1)°, β = 109.039(2)°, γ = 89.979(1)°
Ratio:
a:b:c = 1.195 : 1 : 1.591
Unit Cell V:
1059.4 ų
Comment:
the space group is C1; pseudomonoclinic, i.e., "metrically monoclinic (Laue group 2/m)", α=γ=90°, a = 10.0170(3), b = 8.3860(2), c = 13.3421(4) Å, β = 109.050(3)°, V = 1059.40(5) Å3
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.190 Å | (73) |
| 4.569 Å | (30) |
| 3.906 Å | (19) |
| 3.153 Å | (65) |
| 3.094 Å | (28) |
| 3.089 Å | (100) |
| 2.595 Å | (27) |
| 2.141 Å | (31) |
Type Occurrence of Kozłowskiite
General Appearance of Type Material:
A core band in a zoned silesiaite–kristiansenite crystal.
Place of Conservation of Type Material:
Collections of the Mineralogical Museum, University of Wrocław, Cybulskiego 30, 50–205 Wrocław, Poland, catalogue number MMWr IV7929.
Geological Setting of Type Material:
Pegmatite of the Karkonosze granite, Szklarska Poręba Huta quarry.
Reference:
Szklarska Poręba Huta quarry, Lower Silesia, Poland
Synonyms of Kozłowskiite
Relationship of Kozłowskiite to other Species
Member of:
Other Members of this group:
| Kristiansenite | Ca4Sc2Sn2(Si2O7)2(Si2O6OH)2 | Tric. 1 |
| Silesiaite | Ca4Fe3+2Sn2(Si2O7)2(Si2O6OH)2 | Tric. 1 |
Related Minerals - Strunz-mindat Grouping
| 9.BC. | Anorthoyttrialite-(Y) | Y4(SiO4)(Si3O10) |
| 9.BC.05 | Gittinsite | CaZrSi2O7 |
| 9.BC.05 | Keiviite-(Y) | Y2Si2O7 |
| 9.BC.05 | Keiviite-(Yb) | Yb2Si2O7 |
| 9.BC.05 | Thortveitite | Sc2Si2O7 |
| 9.BC.05 | Yttrialite-(Y) | (Y,Th)2Si2O7 |
| 9.BC.10 | Keldyshite | (Na,H)2ZrSi2O7 |
| 9.BC.10 | Khibinskite | K2ZrSi2O7 |
| 9.BC.10 | Parakeldyshite | Na2ZrSi2O7 |
| 9.BC.15 | Rankinite | Ca3Si2O7 |
| 9.BC.20 | Barysilite | Pb8Mn2+[Si2O7]3 |
| 9.BC.25 | Edgarbaileyite | [Hg2]2+3[Si2O7] |
| 9.BC.30 | Kristiansenite | Ca4Sc2Sn2(Si2O7)2(Si2O6OH)2 |
| 9.BC.30 | Silesiaite | Ca4Fe3+2Sn2(Si2O7)2(Si2O6OH)2 |
| 9.BC.35 | Percleveite-(Ce) | Ce2Si2O7 |
| 9.BC.35 | Percleveite-(La) | La2Si2O7 |
| 9.BC.40 | Scottyite | BaCu2Si2O7 |
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 Kozłowskiite
mindat.org URL:
https://www.mindat.org/min-55754.html
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References for Kozłowskiite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2022) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 65. European Journal of Mineralogy, 34 (1) 143-148 doi:10.5194/ejm-34-143-2022
Pieczka, Adam, Zelek-Pogudz, Sylwia, Gołębiowska, Bożena, Stadnicka, Katarzyna M., Evans, R. James (2022) Kozłowskiite, ideally Ca4Fe2+Sn3(Si2O7)2(Si2O6OH)2, a new kristiansenite-type mineral from Szklarska Poręba, Lower Silesia, Poland. Mineralogical Magazine, 86 (3) 507-517 doi:10.1180/mgm.2022.50
Localities for Kozłowskiite
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.
Poland (TL) | |
| Pieczka et al. (2022) +1 other reference |
