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Betpakdalite-FeFe

A valid IMA mineral species - pending publication
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00874480017271953183444.jpg
Betpakdalite-FeFe, etc.

Mount Moliagul, Moliagul, Central Goldfields Shire, Victoria, Australia
00874480017271953183444.jpg
Betpakdalite-FeFe, etc.

Mount Moliagul, Moliagul, Central Goldfields Shire, Victoria, Australia
00874480017271953183444.jpg
Betpakdalite-FeFe, etc.

Mount Moliagul, Moliagul, Central Goldfields Shire, Victoria, Australia
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About Betpakdalite-FeFeHide

Formula:
[Fe3+2 (H2O)15(OH)2Fe3+(H2O)6][Mo8As2Fe3+3O37]
Crystal System:
Monoclinic
This page provides mineralogical data about Betpakdalite-FeFe.


Unique IdentifiersHide

Mindat ID:
51840
Long-form identifier:
mindat:1:1:51840:8

IMA Classification of Betpakdalite-FeFeHide

IMA status:
Approved, Pending publication
IMA Formula:
[Fe3+2(H2O)15(OH)2Fe3+(H2O)6][Mo6+8As3+2Fe3+3O37]
Approval year:
2017

Classification of Betpakdalite-FeFeHide

Strunz-mindat (2026):
8.DM.

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
M : With large and medium-sized cations, (OH, etc.):RO4 > 2:1

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

Chemistry of Betpakdalite-FeFeHide

Mindat Formula:
[Fe3+2 (H2O)15(OH)2Fe3+(H2O)6][Mo8As2Fe3+3O37]
Element Weights:
Element% weight
O42.535 %
Mo34.015 %
Fe14.846 %
As6.639 %
H1.965 %

Calculated from ideal end-member formula.
O
Mo
Fe
As
H
Elements listed:
As, Fe, H, Mo, O - search for minerals with similar chemistry

Crystallography of Betpakdalite-FeFeHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 19.51(1) Å, b = 11.131(5) Å, c = 15.37(1) Å
β = 130.93(5)°
Ratio:
a:b:c = 1.753 : 1 : 1.381
Unit Cell V:
2,521.77 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.689 Å(10)
9.079 Å(100)
7.329 Å(19)
3.679 Å(15)
3.160 Å(15)
3.051 Å(24)
2.791 Å(17)
2.662 Å(12)
Locality:
Mount Moliagul, Moliagul, Central Goldfields Shire, Victoria, Australia
Comments:
From Type Description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]

Type Occurrence of Betpakdalite-FeFeHide

Type Locality:
ⓘ Mount Moliagul, Moliagul, Central Goldfields Shire, Victoria, Australia
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of theNatural HistoryMuseumof Los Angeles County, Los Angeles, USA, catalogue number 66560, and the Museums Victoria, Melbourne, Australia, registration number M53809

Synonyms of Betpakdalite-FeFeHide

Other Language Names for Betpakdalite-FeFeHide

Relationship of Betpakdalite-FeFe to other SpeciesHide

Member of:
Betpakdalite Group > Betpakdalite Supergroup
Other Members of Betpakdalite Group:
Betpakdalite-CaCa[Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O36(OH)]Mon. 2/m : B2/m
Betpakdalite-CaMg[Ca2(H2O)17Mg(H2O)6][Mo8As2Fe3+3O36(OH)] Mon. 2/m : B2/m
Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3]Mon. 2/m : B2/m
Betpakdalite-NaNa[Na2(H2O)16Na(H2O)6][Mo8As2Fe3+3O33(OH)4] Mon. 2/m : B2/m

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Betpakdalite-FeFe associated with FerrimolybditeFe2(MoO4)3 · nH2O

Related Minerals - Strunz-mindat GroupingHide

8.DM.TomsquarryiteNaMgAl3(PO4)2(OH)6 · 8H2OTrig. 3m(32/m) : R3m
8.DM.ElliottiteNaMgAl3(PO4)2F6 · 9H2OMon. 2/m : B2/m
8.DM.Penriceite[Mg(H2O)6][Na(H2O)2Al3(PO4)2F6] · H2OMon. 2/m : P21/b
8.DM.Betpakdalite-CaMg[Ca2(H2O)17Mg(H2O)6][Mo8As2Fe3+3O36(OH)] Mon. 2/m : B2/m
8.DM.Chinnerite[Mg(H2O)6]Na(H2O)2Al3(PO4)2F6Mon. 2/m : P2/m
8.DM.Sarrochite[Ca4(H2O)38][Mo8P2Fe3+3O37(OH)]Trig. 3m(32/m) : P3m1
8.DM.05EsperanzaiteNaCa2Al2(AsO4)2(OH)F4 · 2H2OMon. 2/m : P21/m
8.DM.05MoriniteNaCa2Al2(PO4)2(OH)F4 · 2H2OMon. 2/m : P21/m
8.DM.10AlexshubnikoviteCa2Cu9(AsO4)4(OH)9Cl(H2O)8 · 2H2OMon. 2/m : P2/b
8.DM.10TangdaniteCa2Cu9(AsO4)4(SO4)0.5(OH)9 · 9H2OMon. 2/m : B2/b
8.DM.10TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2OMon. 2/m
8.DM.15Melkovite[Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)]Mon. 2/m : B2/m
8.DM.15Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3]Mon. 2/m : B2/m
8.DM.15Betpakdalite-CaCa[Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O36(OH)]Mon. 2/m : B2/m
8.DM.20Phosphovanadylite-BaBa[V4+4P2O8(OH)8] · 12H2OIso. 43m : I43m
8.DM.20Phosphovanadylite-CaCa[V4+4P2O12(OH)4] · 12H2O Iso. 43m : I43m
8.DM.25YukoniteCa3Fe3+(AsO4)2(OH)3 · 5H2OOrth. mm2
8.DM.30UdumineliteCa3Al8(PO4)2O12 · 2H2O
8.DM.35Aldermanite[Mg(H2O)6][Na(H2O)2Al3(PO4)2(OH,F)6] · H2O Mon. 2/m : P21/b
8.DM.35'Azovskite'Fe3+3(PO4)(OH)6 or near
8.DM.35DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmedAmor.
8.DM.40Santafeite(Na,Ca,Sr)12(Mn2+,Fe3+,Al,Mg)8Mn4+8(VO4)16(OH,O)20 · 8H2OOrth. mmm(2/m2/m2/m)
8.DM.55TapiaiteCa5Al2(AsO4)4(OH)4 · 12H2OMon.
8.DM.60Alcantarillaite[Fe3+0.5(H2O)4][CaAs3+2(Fe3+2.5W6+0.5)(AsO4)2O7]Orth. mmm(2/m2/m2/m) : Imma

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 Betpakdalite-FeFeHide

References for Betpakdalite-FeFeHide

Localities for Betpakdalite-FeFeHide

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
    • Central Goldfields Shire
      • Moliagul
Hålenius et al. (2017) +1 other reference
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