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Macivorite

A valid IMA mineral species - pending publication
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01088770017477747441681.jpg
Macivorite

Skipton Caves, Mount Widderin, Skipton, Corangamite Shire, Victoria, Australia
01088770017477747441681.jpg
Macivorite

Skipton Caves, Mount Widderin, Skipton, Corangamite Shire, Victoria, Australia
01088770017477747441681.jpg
Macivorite

Skipton Caves, Mount Widderin, Skipton, Corangamite Shire, Victoria, Australia
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About MacivoriteHide

Formula:
(NH4)3Al5(PO3OH)6(PO4)2 · 18H2O
Crystal System:
Trigonal
The ammonium analogue of taranakite.


Unique IdentifiersHide

Mindat ID:
471962
Long-form identifier:
mindat:1:1:471962:1

IMA Classification of MacivoriteHide

IMA status:
Approved, Pending publication
IMA Formula:
(N3-H4)3Al5(PO3OH)6(PO4)2(H2O)12·6H2O
Approval year:
2024

Classification of MacivoriteHide

Strunz-mindat (2026):
8.CH.25

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
H : With large and medium-sized cations, RO4:H2O < 1:1

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

Chemistry of MacivoriteHide

Mindat Formula:
(NH4)3Al5(PO3OH)6(PO4)2 · 18H2O
Element Weights:
Element% weight
O62.541 %
P19.372 %
Al10.547 %
H4.255 %
N3.285 %

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

Crystallography of MacivoriteHide

Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
R3c
Cell Parameters:
a = 8.785(1) Å, c = 95.207(7) Å
Ratio:
a:c = 1 : 10.837
Unit Cell V:
6,363.31 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
15.86 Å(100)
7.88 Å(45)
7.45 Å(39)
5.97 Å(27)
4.36 Å(32)
3.854 Å(29)
3.157 Å(23)
2.640 Å(22)
Locality:
Skipton Caves, Mount Widderin, Skipton, Corangamite Shire, Victoria, Australia

Type Occurrence of MacivoriteHide

Type Locality:
ⓘ Skipton Caves, Mount Widderin, Skipton, Corangamite Shire, Victoria, Australia
Place of Conservation of Type Material:
Type material is deposited in the collections of the South Australian Museum, North Terrace, Adelaide 5000, South Australia, Australia, registration number G35467

Synonyms of MacivoriteHide

Other Language Names for MacivoriteHide

German:Macivorit

Related Minerals - Strunz-mindat GroupingHide

8.CH.GeorgeliuiteCa2Mn3+3O2(AsO4)3(H2O)2 · H2OMon. m : Bm
8.CH.05Natrowalentaite[Fe3+0.5Na0.5(H2O)6][NaAs3+2(Fe3+2.33W6+0.67)(PO4)2O7]Orth. mmm(2/m2/m2/m) : Imma
8.CH.05Walentaite[Mn2+(H2O)6][◻As3+3Fe3+3(PO4)2O7]Orth. mmm(2/m2/m2/m) : Imma
8.CH.05Halilsarpite[Mg(H2O)6][CaAs3+2(Fe3+2.67Mo6+0.33)(AsO4)2O7]Orth. mmm(2/m2/m2/m) : Imma
8.CH.10AnapaiteCa2Fe2+(PO4)2 · 4H2OTric. 1 : P1
8.CH.15PicropharmacoliteCa4Mg(AsO4)2(HAsO4)2 · 11H2OTric. 1 : P1
8.CH.20Dittmarite(NH4)Mg(PO4) · H2OOrth. mm2 : Pmn21
8.CH.20Niahite(NH4)Mn2+(PO4) · H2OOrth. mm2 : Pmn21
8.CH.25TaranakiteK3Al5(PO3OH)6(PO4)2 · 18H2OTrig. 3m(32/m) : R3c
8.CH.25FrancoanelliteK3Al5(PO3OH)6(PO4)2 · 12H2OTrig.
8.CH.30Schertelite(NH4)2MgH2(PO4)2 · 4H2OOrth. mmm(2/m2/m2/m) : Pbca
8.CH.35Hannayite(NH4)2Mg3H4(PO4)4 · 8H2OTric. 1 : P1
8.CH.40HazeniteKNaMg2(PO4)2 · 14H2OOrth. mmm(2/m2/m2/m)
8.CH.40Struvite-(K)KMg(PO4) · 6H2OOrth. mm2 : Pmn21
8.CH.40Struvite(NH4)Mg(PO4) · 6H2OOrth. mm2 : Pmn21
8.CH.45Rimkorolgite(Mg,Mn)5(Ba,Sr,Ca)(PO4)4 · 8H2OOrth.
8.CH.50BakhchisaraitseviteNa2Mg5(PO4)4 · 7H2OMon. 2/m : P21/c
8.CH.55SmolyaninoviteCo3Fe3+2(AsO4)4 · 11H2OOrth.
8.CH.55FahleiteCaZn5Fe3+2(AsO4)6 · 14H2OOrth.
8.CH.60Barahonaite-(Fe)(Ca,Cu,Na,Fe3+,Al)12Fe3+2(AsO4)8(OH,Cl)x · nH2OMon. 2/m : P2/b
8.CH.60Barahonaite-(Al)(Ca,Cu,Na,Fe3+,Al)12Al2(AsO4)8(OH,Cl)x · nH2OMon. 2/m : P2/b
8.CH.70EpifanoviteNaCaCu5(PO4)4[AsO2(OH)2] · 7H2OMon. 2/m : P21/m
8.CH.75Esdanaite-(Ce)NaMnCe(PO4)2 · 4H2OOrth. 222 : P212121

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 MacivoriteHide

References for MacivoriteHide

Localities for MacivoriteHide

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.
Australia (TL)
 
  • Victoria
    • Corangamite Shire
      • Skipton
        • Mount Widderin
Bosi et al. (2025)
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