Pertlikite
A valid IMA mineral species
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About Pertlikite
Formula:
K2(Fe2+,Mg)2Mg4Fe3+2Al(SO4)12 · 18H2O
Colour:
Dark olive green to black
Specific Gravity:
2.59
Crystal System:
Tetragonal
Member of:
Name:
In honour of Franz Pertlik (b. 1943), Professor of Mineralogy and Crystallography, University of Vienna, Austria, in recognition of his extensive work on the crystal chemistry of minerals.
Voltaite Group. Chemically related to magnesiovoltaite. One of a few ferrous-ferric sulfate minerals, by bílinite, copiapite, römerite (purely Fe minerals), metavoltine, and voltaite.
Tetragonal-pseudocubic due to ordering of Fe and Mg.
An apparently cubic (a = 27.220 Å) pertlikite-related mineral with the formula [K0.73(NH4)0.27]2(Mg,Al,Fe)62+(Fe0.93Al0.07)23+Al(SO4)12·18H2O and unknown Fe(II):Fe(III) ratio was described by Witzke et al. (2015).
Tetragonal-pseudocubic due to ordering of Fe and Mg.
An apparently cubic (a = 27.220 Å) pertlikite-related mineral with the formula [K0.73(NH4)0.27]2(Mg,Al,Fe)62+(Fe0.93Al0.07)23+Al(SO4)12·18H2O and unknown Fe(II):Fe(III) ratio was described by Witzke et al. (2015).
Unique Identifiers
Mindat ID:
36064
Long-form identifier:
mindat:1:1:36064:3
GUID
(UUID V4):
(UUID V4):
c71c6d62-e9b2-4899-85ab-1c5f43e99834
IMA Classification of Pertlikite
Approved
IMA Formula:
K2(Fe2+,Mg)2(Mg,Fe3+)4Fe3+2Al(SO4)12 · 18H2O
Approval year:
2005
First published:
2008
Classification of Pertlikite
7.CC.25
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations
29.9.1.3
29 : HYDRATED ACID AND NORMAL SULFATES
9 : Miscellaneous
29 : HYDRATED ACID AND NORMAL SULFATES
9 : Miscellaneous
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Plk | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Prt | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Pertlikite
Colour:
Dark olive green to black
Streak:
Grayish green
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
2.59(3) g/cm3 (Measured) 2.56(1) g/cm3 (Calculated)
Optical Data of Pertlikite
Type:
Uniaxial (-)
RI values:
nω = 1.590(2) nε = 1.586(2)
Birefringence:
Very low
Max Birefringence:
δ = 0.004
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemistry of Pertlikite
Mindat Formula:
K2(Fe2+,Mg)2Mg4Fe3+2Al(SO4)12 · 18H2O
Crystallography of Pertlikite
Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I41/acd
Cell Parameters:
a = 19.2080 Å, c = 27.2158 Å
Ratio:
a:c = 1 : 1.417
Unit Cell V:
10,041.19 ų (Calculated from Unit Cell)
Comment:
Pseudocubic.
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) |
---|---|---|---|---|---|---|---|
0006190 | Pertlikite | Ertl A, Dyar M D, Hughes J M, Brandstatter F, Gunter M E, Prem M, Peterson R C (2008) Pertlikite, a new tetragonal Mg-rich member of the voltaite group from Madeni Zakh, Iran The Canadian Mineralogist 46 661-669 | 2008 | Madeni Zakh, Iran | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.543 Å | (28) |
3.396 Å | (100) |
3.136 Å | (21) |
3.038 Å | (39) |
2.848 Å | (31) |
2.534 Å | (21) |
2.078 Å | (29) |
1.601 Å | (21) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
45a : [Sulfates, arsenates, selenates, antimonates] | |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
Stage 10b: Anthropogenic minerals | <10 Ka |
55 : Anthropogenic mine minerals |
Type Occurrence of Pertlikite
General Appearance of Type Material:
Single crystals up to 1 cm.
Place of Conservation of Type Material:
Institute for Mineralogy and Crystallography, University of Vienna, Austria (7813).
National Museum of Natural History, Washington, D.C., USA (NMNH174370).
Museum of Natural History, Harvard University, Cambridge, Massachusetts, USA, (135547).
National Museum of Natural History, Washington, D.C., USA (NMNH174370).
Museum of Natural History, Harvard University, Cambridge, Massachusetts, USA, (135547).
Geological Setting of Type Material:
Pyrite-bearing trachytic eruptive rock. It probably formed after the decomposition of pyrite.
Associated Minerals at Type Locality:
Synonyms of Pertlikite
Relationship of Pertlikite to other Species
Member of:
Other Members of this group:
Ammoniomagnesiovoltaite | (NH4)2Mg2+5Fe3+3Al(SO4)12 · 18H2O | Iso. m3m (4/m 3 2/m) : Fd3c |
Ammoniovoltaite | (NH4)2Fe2+5Fe3+3Al(SO4)12(H2O)18 | Iso. m3m (4/m 3 2/m) : Fd3c |
Magnesiovoltaite | K2Mg5Fe3+3Al(SO4)12 · 18H2O | Iso. m3m (4/m 3 2/m) : Fd3c |
Voltaite | K2Fe2+5Fe3+3Al(SO4)12 · 18H2O | Iso. m3m (4/m 3 2/m) : Fd3c |
Zincovoltaite | K2Zn5Fe3+3Al(SO4)12 · 18H2O | Iso. m3m (4/m 3 2/m) : Fd3c |
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Pertlikite associated with Coquimbite | AlFe3(SO4)6(H2O)12 · 6H2O |
2 photos of Pertlikite associated with Alcaparrosaite | K3Ti4+Fe3+(SO4)4O(H2O)2 |
1 photo of Pertlikite associated with Tamarugite | NaAl(SO4)2 · 6H2O |
1 photo of Pertlikite associated with Krausite | KFe(SO4)2 · H2O |
Related Minerals - Strunz-mindat Grouping
7.CC. | Cobaltoblödite | Na2Co(SO4)2 · 4H2O |
7.CC. | Andychristyite | PbCu2+Te6+O5(H2O) |
7.CC. | Ammoniovoltaite | (NH4)2Fe2+5Fe3+3Al(SO4)12(H2O)18 |
7.CC.05 | Krausite | KFe(SO4)2 · H2O |
7.CC.10 | Tamarugite | NaAl(SO4)2 · 6H2O |
7.CC.15 | Kalinite | KAl(SO4)2 · 11H2O |
7.CC.15 | Mendozite | NaAl(SO4)2 · 11H2O |
7.CC.20 | Lonecreekite | (NH4)Fe3+(SO4)2 · 12H2O |
7.CC.20 | Alum-(K) | KAl(SO4)2 · 12H2O |
7.CC.20 | Alum-(Na) | NaAl(SO4)2 · 12H2O |
7.CC.20 | Tschermigite | (NH4)Al(SO4)2 · 12H2O |
7.CC.20 | Lanmuchangite | Tl+Al(SO4)2 · 12H2O |
7.CC.25 | Voltaite | K2Fe2+5Fe3+3Al(SO4)12 · 18H2O |
7.CC.25 | Zincovoltaite | K2Zn5Fe3+3Al(SO4)12 · 18H2O |
7.CC.25 | Ammoniomagnesiovoltaite | (NH4)2Mg2+5Fe3+3Al(SO4)12 · 18H2O |
7.CC.25 | Magnesiovoltaite | K2Mg5Fe3+3Al(SO4)12 · 18H2O |
7.CC.30 | Kröhnkite | Na2Cu(SO4)2 · 2H2O |
7.CC.35 | Ferrinatrite | Na3Fe(SO4)3 · 3H2O |
7.CC.40 | Goldichite | KFe(SO4)2 · 4H2O |
7.CC.45 | Löweite | Na12Mg7(SO4)13 · 15H2O |
7.CC.50 | Blödite | Na2Mg(SO4)2 · 4H2O |
7.CC.50 | Nickelblödite | Na2(Ni,Mg)(SO4)2 · 4H2O |
7.CC.50 | Changoite | Na2Zn(SO4)2 · 4H2O |
7.CC.55 | Leonite | K2Mg(SO4)2 · 4H2O |
7.CC.55 | Mereiterite | K2Fe(SO4)2 · 4H2O |
7.CC.60 | Boussingaultite | (NH4)2Mg(SO4)2 · 6H2O |
7.CC.60 | Cyanochroite | K2Cu(SO4)2 · 6H2O |
7.CC.60 | Mohrite | (NH4)2Fe(SO4)2 · 6H2O |
7.CC.60 | Nickelboussingaultite | (NH4)2Ni(SO4)2 · 6H2O |
7.CC.60 | Picromerite | K2Mg(SO4)2 · 6H2O |
7.CC.60 | Nickelpicromerite | K2Ni(SO4)2 · 6H2O |
7.CC.60 | Katerinopoulosite | (NH4)2Zn(SO4)2 · 6H2O |
7.CC.65 | Polyhalite | K2Ca2Mg(SO4)4 · 2H2O |
7.CC.70 | Leightonite | K2Ca2Cu(SO4)4 · 2H2O |
7.CC.75 | Amarillite | NaFe(SO4)2 · 6H2O |
7.CC.80 | Konyaite | Na2Mg(SO4)2 · 5H2O |
7.CC.85 | Wattevilleite | Na2Ca(SO4)2 · 4H2O (?) |
7.CC.85 | Xocolatlite | Ca2Mn4+2(Te6+O6)2 · H2O |
7.CC.90 | Eckhardite | (Ca,Pb)Cu2+Te6+O5(H2O) |
Fluorescence of Pertlikite
Not fluorescent.
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 Pertlikite
mindat.org URL:
https://www.mindat.org/min-36064.html
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References for Pertlikite
Localities for Pertlikite
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Chile | |
| Samples analysed by Tony Kampf (LAC Museum) +5 other references |
Costa Rica | |
| Rodríguez et al. (2017) |
Hungary | |
| Collectors: Gábor Koller & Dávid ... |
Iran (TL) | |
| Ertl +6 other references |
Italy | |
| Russo et al. (2017) |
Russo et al. (2017) | |
| Campostrini I. et al - Vulcano: ein ... |
Poland | |
| Cu +2 other references |
Quick NavTopAbout PertlikiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Grotta dell'Allume, Faraglione Nico, Faraglioni di Levante, Porto Levante, Vulcano Island, Lipari, Eolie Islands, Metropolitan City of Messina, Sicily, Italy