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Amoraite

A valid IMA mineral species - pending publication
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The first supergroup member with species-defining sulfite group. As mariakrite (another member of the hydrotalcite supergroup) it is distinguished by strongly reduced symmetry.


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Unique IdentifiersHide

Mindat ID:
470923
Long-form identifier:
mindat:1:1:470923:3

Similar NamesHide

AmbriteA variety of 'Retinite'
AmbroiteA synonym of 'Amber'

IMA Classification of AmoraiteHide

Approved, Pending publication
IMA Formula:
Ca12Al6(OH)36(CO3)2(S4+O3)·15H2O

Classification of AmoraiteHide

5.DA.

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With 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
AmorIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Chemistry of AmoraiteHide

Mindat Formula:
Ca12Al6(OH)36(CO3)2(SO3) · 15H2O
Element Weights:
Element% weight
O55.637 %
Ca27.874 %
Al9.383 %
H3.856 %
S1.858 %
C1.392 %

Calculated from ideal end-member formula.
O
Ca
Al
H
S
C

Crystallography of AmoraiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 15.2630(2) Å, b = 16.0664(2) Å, c = 23.0448(3) Å
α = 100.259(1)°, β = 100.936(1)°, γ = 94.299(1)°
Ratio:
a:b:c = 0.95 : 1 : 1.434
Unit Cell V:
5,425.05 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.89 Å(100)
3.933 Å(41)
3.815 Å(39)
2.882 Å(29)
2.526 Å(26)
2.441 Å(25)
2.323 Å(19)
2.130 Å(14)

Type Occurrence of AmoraiteHide

Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5877/1

Other Language Names for AmoraiteHide

Dutch:Amoraiet
French:Amoraïte
German:Amorait
Norwegian:Amoraitt

Relationship of Amoraite to other SpeciesHide

Other Members of Hydrotalcite Supergroup:
Akopovaite Al4Li2(OH)12(CO3)(H2O)3Mon. 2/m : B2/m
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)
PoellmanniteCa6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2OTrig. 3 : R3
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

5.DA.AlexkhomyakoviteK6(Ca2Na)(CO3)5Cl · 6H2OHex. 6/mmm(6/m2/m2/m) : P63/mcm
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2OMon. 2 : P21
5.DA.05'UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)'Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05'UM1987-01-CO:HMgS'Mg4(CO3)2(OH)4 · 6H2O ?Mon.
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2OMon. 2/m : P21/c
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2OMon. 2/m : P21/c
5.DA.10ArtiniteMg2(CO3)(OH)2 · 3H2OMon. 2/m : B2/m
5.DA.10ChlorartiniteMg2(CO3)(OH)Cl · 2H2OTrig. 3m : R3c
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.15ZaratiteNi3(CO3)(OH)4 · 4H2O ?Iso.
5.DA.15OtwayiteNi2(CO3)(OH)2 · H2OOrth.
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2OHex. 6 : P63
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2OMon. 2/m : B2/b
5.DA.30Claraite(Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14 · 7H2OTric. 1 : P1
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2OTric.
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2OTric.
5.DA.40KarchevskyiteMg18Al9(OH)54Sr2(CO3)9(H2O)6(H3O)5Trig.
5.DA.40'UM1987-05-OH:AlCMg'Mg4Al2(OH)12(CO3,SO4) · 3H2O
5.DA.40QuintiniteMg4Al2(OH)12(CO3) · 3H2OHex. 622 : P6322
5.DA.40CharmariteMn2+4Al2(OH)12[CO3] · 3H2OHex.
5.DA.40CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig. 32 : P3112
5.DA.45'Hydrotalcite-2H'Mg6Al2(CO3)(OH)16 · 4H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
5.DA.45'Stichtite-2H'Mg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
5.DA.45ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2OHex.
5.DA.45'Pyroaurite-2H'Mg6Fe3+2(OH)16(CO3) · 4H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
5.DA.45LiudongshengiteZn4Cr2(OH)12(CO3) · 3H2OTrig. 3m(32/m) : R3m
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex. 6/mmm(6/m2/m2/m) : P63/mcm
5.DA.50PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m(32/m) : R3m
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig. 3m(32/m) : R3m
5.DA.50ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig. 3m(32/m) : R3m
5.DA.50KaznakhtiteNi6Co3+2(CO3)(OH)16 · 4H2OTrig. 3 : R3
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2OTrig.
5.DA.50Marioantofilliite[Cu4Al2(OH)12](CO3) · 3H2OMon. 2/m : B2/m
5.DA.50HydrotalciteMg6Al2(CO3)(OH)16 · 4H2OTrig. 3m(32/m) : R3m
5.DA.50StichtiteMg6Cr3+2(OH)16[CO3] · 4H2OTrig. 3m(32/m) : R3m
5.DA.50DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m(32/m)
5.DA.55CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig. 3m(32/m) : R3m
5.DA.55Akopovaite Al4Li2(OH)12(CO3)(H2O)3Mon. 2/m : B2/m
5.DA.60ŠlikiteZn2Mg(CO3)2(OH)2 · 4H2OTric. 1 : P1
5.DA.65MarkliteCu5(CO3)2(OH)6 · 6H2OMon. 2/m : P21/c

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 AmoraiteHide

References for AmoraiteHide

Localities for AmoraiteHide

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
Bosi et al. (2023)
 
and/or  
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