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Poellmannite

A valid IMA mineral species - pending publication
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Most likely within the wermlandite group of the hydrotalcite supergroup. The Ca analogue of nikischerite and shigaite.


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Unique IdentifiersHide

Mindat ID:
55972
Long-form identifier:
mindat:1:1:55972:4

IMA Classification of PoellmanniteHide

IMA status:
Approved, Pending publication
IMA Formula:
Ca6Al3(OH)18[Na(H2O)6](S6+O4)2·6H2O
Approval year:
2021

Classification of PoellmanniteHide

Strunz-mindat (2026):
7.DF.

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
PoeIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Chemistry of PoellmanniteHide

Mindat Formula:
Ca6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O
Element Weights:
Element% weight
O57.419 %
Ca22.710 %
Al7.645 %
S6.057 %
H3.998 %
Na2.171 %

Calculated from ideal end-member formula.
Elements listed:
Al, Ca, H, Na, O, S - search for minerals with similar chemistry

Crystallography of PoellmanniteHide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Cell Parameters:
a = 9.9643(2) Å, c = 30.2212(7) Å
Ratio:
a:c = 1 : 3.033
Unit Cell V:
2,598.58 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.12 Å(100)
5.04 Å(81)
4.47 Å(23)
3.544 Å(31)
2.877 Å(33)
2.497 Å(34)
2.418 Å(22)
2.247 Å(21)
Locality:
Hatrurim Junction (road no. 31), Hatrurim Basin, Tamar Regional Council, Beersheba Subdistrict, Southern District, Israel

Type Occurrence of PoellmanniteHide

Type Locality:
ⓘ Hatrurim Junction (road no. 31), Hatrurim Basin, Tamar Regional Council, Beersheba Subdistrict, Southern District, Israel
Place of Conservation of Type Material:
collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5798/1

Synonyms of PoellmanniteHide

Other Language Names for PoellmanniteHide

Relationship of Poellmannite to other SpeciesHide

Member of:
Hydrotalcite Supergroup
Other Members of Hydrotalcite Supergroup:
Akopovaite Al4Li2(OH)12(CO3)(H2O)3Mon. 2/m : B2/m
AmoraiteCa12Al6(OH)36(CO3)2(SO3) · 15H2O Tric. 1 : P1
BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
CarbocalumiteCa4Al2(OH)12(CO3) · 6H2OTrig. 3m(32/m) : R3c
CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig. 3m(32/m) : R3m
Cualstibite GroupM2R(OH)6[Sb5+(OH)6], where M = Zn, Ni, Cu and R = Al or Fe3+
DritsiteLi2Al4(OH)12Cl2 · 3H2OHex. 6/mmm(6/m2/m2/m) : P63/mcm
Fougèrite Group
Glaucocerinite Group
Hydrocalumite Group
Hydrotalcite GroupM6R3+2(OH)16Z · 4H2O, where M=Mg, Fe, Ni, R3+ = Al, Cr, Co or Fe, and Z=CO3, Cl
Marioantofilliite[Cu4Al2(OH)12](CO3) · 3H2OMon. 2/m : B2/m
MuskoxiteMg7Fe4O13 · 10H2OTrig. 3m(32/m)
Quintinite Group
RotemiteCa4Cr2(OH)12Cl2 · 4H2OTrig. 3m(32/m) : R3c
'UM1987-05-OH:AlCMg'Mg4Al2(OH)12(CO3,SO4) · 3H2O
Wermlandite GroupM7R3+2(OH)18[Ca(H2O)6][SO4]2 · 6H2O, where = Mg, Fe, Zn and R= Al or Fe
Woodwardite GroupMay be considered a subgroup of the Hydrotalcite Group.

Related Minerals - Strunz-mindat GroupingHide

7.DF.Siligiite [Pb(H2O)5(SO4)][Zn9(OH)18]Mon. 2/m : P21/b
7.DF.AlcaparrosaiteK3Ti4+Fe3+(SO4)4O(H2O)2Mon. 2/m : B2/b
7.DF.FlaggitePb4Cu2+4Te6+2(SO4)2O11(OH)2(H2O)Tric. 1 : P1
7.DF.BairditePb2Cu2+4Te6+2O10(OH)2(SO4) · H2OMon. 2/m : P21/b
7.DF.TzeferisiteCaZn8(SO4)2(OH)12Cl2(H2O)9Trig. 3m(32/m) : R3c
7.DF.Cherokeeite[Pb2Zn(OH)4](SO4) · H2OMon. 2/m
7.DF.Ammoniomathesiusite(NH4)5(UO2)4(SO4)4(VO5) · 4H2OTet. 4/m : P4/n
7.DF.Sigogglinite[Pb6Zn(OH)8]2(SO4)6 · (H2O)8-xMon. 2/m : P2/m
7.DF.XBlueridgeite[Pb8Zn3Cu2+(OH)16](SO4)2(S2O3)2 · 2H2OMon. 2/m : P21/b
7.DF.ErssoniteMg7Fe3+2(OH)18[Ca(H2O)6](SO4)2 · 12H2OTrig. 3m(32/m) : P3c1
7.DF.Carlsonite(NH4)5Fe3+3O(SO4)6 · 7H2OTric. 1 : P1
7.DF.Cuprocherokeeite[Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2OMon. 2/m
7.DF.Haywoodite[Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3]Tric. 1 : P1
7.DF.ChromschieffelinitePb10Te6+6O20(OH)14(CrO4)(H2O)5Orth. 222 : C2221
7.DF.05UklonskoviteNaMg(SO4)F · 2H2OMon. 2/m : P21/m
7.DF.10KainiteKMg(SO4)Cl · 3H2OMon. 2/m : B2/m
7.DF.10KaliochalciteKCu2(SO4)2[(OH)(H2O)]Mon. 2/m : B2/m
7.DF.15NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
7.DF.17GenplesiteCa3Sn(SO4)2(OH)6 · 3H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
7.DF.17'Unnamed (Ba-Sb Silicate-Sulphate-Hydroxide-Hydrate)'Ba3Sb5+[(Si,S)O3(OH)]2(OH,O)6 · 3H2O Trig. 3 : P3
7.DF.20SideronatriteNa2Fe(SO4)2(OH) · 3H2OOrth. 222 : P212121
7.DF.20MetasideronatriteNa2Fe(SO4)2(OH) · H2OOrth. mmm(2/m2/m2/m)
7.DF.25FleischeritePb3Ge(SO4)2(OH)6 · 3H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
7.DF.25MallestigitePb3Sb5+(SO4)(AsO4)(OH)6 · 3H2OHex. 6 : P63
7.DF.25SchaurteiteCa3Ge(SO4)2(OH)6 · 4H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
7.DF.25DespujolsiteCa3Mn4+(SO4)2(OH)6 · 3H2OHex. 6m2 : P62c
7.DF.30Slavíkite(H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2OTrig. 3 : R3
7.DF.35MetavoltineK2Na6Fe2+Fe3+6O2(SO4)12 · 18H2OTrig.
7.DF.40LannoniteMg2Ca4Al4(SO4)8F8 · 24H2OTet. 4/m : I4/m
7.DF.40VlodavetsiteAlCa2(SO4)2F2Cl · 4H2OTet. 4/m : I4/m
7.DF.45PeretaiteCa(SbO)4(SO4)2(OH)2 · 2H2OMon. 2/m : B2/b
7.DF.50GordaiteNaZn4(SO4)(OH)6Cl · 6H2OTrig. 3 : P3
7.DF.50CalamaiteNa2TiO(SO4)2 · 2H2OOrth. mmm(2/m2/m2/m) : Ibam
7.DF.52Huizingite-(Al)[(NH4)9(SO4)2][(Al,Fe3+)3(OH)2(H2O)4(SO4)6]Tric. 1 : P1
7.DF.52ScordariiteK8(Fe3+0.67◻0.33)[Fe3+3O(SO4)6]2 · 14H2OTrig. 3 : R3
7.DF.55Clairite(NH4)2Fe3(SO4)4(OH)3 · 3H2OTric.
7.DF.55GiacovazzoiteK5Fe3+3O(SO4)6 · 10H2OMon. 2/m : P21/b
7.DF.57MagnanelliiteK3Fe3+2(SO4)4(OH)(H2O)2Mon. 2/m : B2/b
7.DF.60ArzruniteCu4Pb2(SO4)(OH)4Cl6 · 2H2O (?)Orth.
7.DF.60EvdokimoviteTl4(VO)3(SO4)5(H2O)5Mon. 2/m
7.DF.62Bridgesite-(Ce)CaCe2Cu6(SO4)4(OH)12 · 8H2OMon. 2/m : B2/m
7.DF.65ElyitePb4Cu(SO4)O2(OH)4 · H2OMon. 2/m : P21/b
7.DF.70YecoraiteFe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O
7.DF.70LautenthalitePbCu4(SO4)2(OH)6 · 3H2OMon. 2/m : P21/b
7.DF.75RiomarinaiteBi(SO4)(OH) · H2OMon. 2/m
7.DF.80DukeiteBi3+24Cr6+8O57(OH)6 · 3H2OTrig. 3m : P31c

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.

Internet Links for PoellmanniteHide

References for PoellmanniteHide

Localities for PoellmanniteHide

Showing 1 localities.

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.
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Locality ListHide

- 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.
Israel (TL)
 
  • Southern District
    • Beersheba Subdistrict
      • Tamar Regional Council
        • Hatrurim Basin
Miyawaki et al. (2022)
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