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Maohokite

A valid IMA mineral species
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04947500017271953286339.jpg
Maohokite, etc.

Xiuyan Crater, Pianling, Xiuyan Co., Anshan, Liaoning, China
04947500017271953286339.jpg
Maohokite, etc.

Xiuyan Crater, Pianling, Xiuyan Co., Anshan, Liaoning, China
04947500017271953286339.jpg
Maohokite, etc.

Xiuyan Crater, Pianling, Xiuyan Co., Anshan, Liaoning, China
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About MaohokiteHide

08963920017271953287271.jpg
Ho-Kwang (David) Mao
Formula:
MgFe2O4
Specific Gravity:
5.33 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Ho-Kwang (David) Mao (毛河光) (b. 18 June 1941, Shanghai, China), geologist at the Geophysical Laboratory of the Carnegie Institution for Science. He is an expert in high pressures and temperatures, and has repeatedly achieved the highest laboratory pressures in the world. Among many honors, he was awarded the 2005 Roebling Medal. The species davemaoite is also named after him.
Dimorph of:
Magnesioferrite
Maohokite was formed from subsolidus decomposition of ankerite Ca(Fe2+,Mg)(CO3)2 via a self-oxidation-reduction reaction at impact pressure and temperature of 25–45 GPa and 800–900 °C.


Unique IdentifiersHide

Mindat ID:
52154
Long-form identifier:
mindat:1:1:52154:5

Similar NamesHide

Mohawkite
MooihoekiteA valid IMA mineral speciesCu9Fe9S16

IMA Classification of MaohokiteHide

Classification of MaohokiteHide

Strunz-mindat (2026):
4.BB.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only 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
MhkIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of MaohokiteHide

Density:
5.33 g/cm3 (Calculated)

Chemistry of MaohokiteHide

Mindat Formula:
MgFe2O4
Element Weights:
Element% weight
Fe55.847 %
O32.000 %
Mg12.153 %

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

Crystallography of MaohokiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 8.907(1) Å, b = 9.937(8) Å, c = 2.981(1) Å
Ratio:
a:b:c = 0.896 : 1 : 0.3
Unit Cell V:
263.8 ų

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.663 Å(100)
1.932 Å(90)
1.673 Å(20)
1.533 Å(50)
1.431 Å(12)
1.155 Å(15)
1.131 Å(12)
1.087 Å(30)
Locality:
Xiuyan Crater, Pianling, Xiuyan Co., Anshan, Liaoning, China
Reference:
Chen, Ming; Shu, Jinfu; Xie, Xiande; Tan, Dayong (2018) Maohokite, a post‐spinel polymorph of MgFe2O4 in shocked gneiss from the Xiuyan crater in China. Meteoritics & Planetary Science, 54 (3). 495-502 doi:10.1111/maps.13222
Comments:
From Type Description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Near-surface Processes
30 : Terrestrial impact minerals

Type Occurrence of MaohokiteHide

Type Locality:
ⓘ Xiuyan Crater, Pianling, Xiuyan Co., Anshan, Liaoning, China
General Appearance of Type Material:
Nano sized crystallites.
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Geological Museum, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Tianhe, Kehua Street 511, Guangzhou 510640, China, catalogue number XY-shock gneiss 290.
Geological Setting of Type Material:
Shocked gneiss.
Associated Minerals at Type Locality:
CalciteDiamondReidite'UM2000-41-O:Ti (TiO2-II)'
Reference:
Chen, Ming; Shu, Jinfu; Xie, Xiande; Tan, Dayong (2018) Maohokite, a post‐spinel polymorph of MgFe2O4 in shocked gneiss from the Xiuyan crater in China. Meteoritics & Planetary Science, 54 (3). 495-502 doi:10.1111/maps.13222

Synonyms of MaohokiteHide

Other Language Names for MaohokiteHide

Dutch:Maohokiet
German:Maohokit

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Maohokite associated with MagnesioferriteMgFe3+2O4
1 photo of Maohokite associated with CalciteCaCO3

Related Minerals - Strunz-mindat GroupingHide

4.BB.ChenmingiteFeCr2O4Orth. mmm(2/m2/m2/m) : Pnma
4.BB.ThermaerogeniteCuAl2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.ChukocheniteLiAl5O8Orth. mmm(2/m2/m2/m) : Imma
4.BB.Elgoresyite(Mg5Si2)O9Mon. 2/m : B2/m
4.BB.JianmuiteZrTi4+Ti3+5Al3O16Tet. 4 : I4
4.BB.DellagiustaiteV2+Al2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.GarpenbergiteMn6◻AsSbO10(OH)2Orth. mmm(2/m2/m2/m)
4.BB.MagnéliiteTi3+2Ti4+2O7Tric. 1 : P1
4.BB.05Qandilite(Mg,Fe3+)2(Ti,Fe3+,Al)O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05ChromiteFe2+Cr3+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05Filipstadite(Fe3+0.5Sb5+0.5)Mn2O4Iso.
4.BB.05JacobsiteMn2+Fe3+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05WernerkrauseiteCa(Fe3+,Mn3+)2Mn4+O6Orth. mmm(2/m2/m2/m) : Pnma
4.BB.05HarmuniteCaFe2O4Orth. mmm(2/m2/m2/m) : Pbcm
4.BB.05ZincochromiteZnCr2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05Deltalumite(Al0.67◻0.33)Al2O4Tet. 42m : P4m2
4.BB.05FrankliniteZn2+Fe3+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05CochromiteCoCr2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05'Nichromite'(Ni,Co,Fe)(Cr,Fe,Al)2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05HercyniteFe2+Al2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05GahniteZnAl2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05GalaxiteMn2+Al2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05GuiteCo2+Co3+2O4Iso.
4.BB.05CoulsoniteFe2+V3+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05VuorelaineniteMn2+V3+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05SpinelMgAl2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05CuprospinelCu2+Fe3+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05ManganochromiteMn2+Cr2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05MagnesiocoulsoniteMgV2O4Iso. m3m(4/m32/m)
4.BB.05TrevoriteNi2+Fe3+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05MagnesiochromiteMgCr2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05MagnesioferriteMgFe3+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05MagnetiteFe2+Fe3+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.05UlvöspinelTiFe2+2O4Iso. m3m(4/m32/m) : Fd3m
4.BB.10HausmanniteMn2+Mn3+2O4Tet. 4/mmm(4/m2/m2/m) : I41/amd
4.BB.10HetaeroliteZnMn2O4Tet. 4/mmm(4/m2/m2/m) : I41/amd
4.BB.10Manganostibite(Mn,Fe)7SbAsO12Orth. mmm(2/m2/m2/m)
4.BB.15Titanomaghemite(Ti4+0.5◻0.5)Fe3+2O4Iso. 432 : P4332
4.BB.15Maghemite(Fe3+0.67◻0.33)Fe3+2O4Iso. 432 : P4132
4.BB.20Tegengrenite(Mn3+0.5Sb5+0.5)Mg2O4Trig. 3 : R3
4.BB.25XieiteFe2+Cr2O4Orth. mmm(2/m2/m2/m)
4.BB.30CarmeltaziteZrAl2Ti4O11Orth. mmm(2/m2/m2/m) : Pnma
4.BB.35FeiiteFe2+2(Fe2+Ti4+)O5Orth. mmm(2/m2/m2/m) : Cmcm
4.BB.45Tschaunerite (Fe2+)(Fe2+Ti4+)O4Orth. mmm(2/m2/m2/m) : Cmcm

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 MaohokiteHide

References for MaohokiteHide

Localities for MaohokiteHide

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.
China (TL)
 
  • Liaoning
    • Anshan
      • Xiuyan Co.
        • Pianling
Yin +4 other references
Quick NavTopAbout MaohokiteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
 
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