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Manganochromite

Formula:
(Mn,Fe)(Cr,V)
 
2
O
 
4
Hardness:5½


Manganochromite-Vuorelainenite Series.

Classification of Manganochromite

IMA status:Approved
Strunz 8th edition ID:4/B.03-30
Nickel-Strunz 10th (pending) edition ID:4.BB.05

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
Dana 8th edition ID:7.2.3.2

7 : MULTIPLE OXIDES
2 : AB2X4
Hey's CIM Ref.:7.19.7

7 : Oxides and Hydroxides
19 : Oxides of Mn and Fe
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Type Occurrence of Manganochromite

Type Locality:Shepherd Hill Quarry (Brukunga Quarry), Nairne, South Mt Lofty Ranges, Mt Lofty Ranges, South Australia, Australia
Year of Discovery:1978

Physical Properties of Manganochromite

Hardness (Mohs):5½

Chemical Properties of Manganochromite

Formula:
(Mn,Fe)(Cr,V)
 
2
O
 
4
Essential elements:Cr, Mn, O
All elements listed in formula:Cr, Fe, Mn, O, V

Relationship of Manganochromite to other Species

Series:Forms a series with Vuorelainenite (see here)
Related Minerals - Nickel-Strunz Grouping):
4.BB.05Brunogeierite
(Ge,Fe)Fe
 
2
O
 
4
4.BB.05Chromite
FeCr
 
2
O
 
4
4.BB.05Cochromite
(Co,Ni,Fe)(Cr,Al)
 
2
O
 
4
4.BB.05Coulsonite
FeV
 
2
O
 
4
4.BB.05Cuprospinel
Cu
2+
 
Fe
3+
2
O
 
4
4.BB.05Filipstadite
(Mn,Mg)
 
2
(Sb
 
.5
Fe
 
.5
)O
 
4
4.BB.05Franklinite
Zn
2+
 
Fe
3+
2
O
 
4
4.BB.05Gahnite
ZnAl
 
2
O
 
4
4.BB.05Galaxite
(Mn,Fe,Mg)(Al,Fe)
 
2
O
 
4
4.BB.05Hercynite
FeAl
 
2
O
 
4
4.BB.05Jacobsite
Mn
2+
 
Fe
3+
2
O
 
4
4.BB.05Magnesiocoulsonite
MgV
 
2
O
 
4
4.BB.05Magnesiochromite
MgCr
 
2
O
 
4
4.BB.05Magnesioferrite
MgFe
3+
2
O
 
4
4.BB.05Magnetite
Fe
2+
 
Fe
3+
2
O
 
4
4.BB.05Nichromite
(Ni,Co,Fe)(Cr,Fe,Al)
 
2
O
 
4
4.BB.05Qandilite
(Mg,Fe)
 
2
(Ti,Fe,Al)O
 
4
4.BB.05Spinel
MgAl
 
2
O
 
4
4.BB.05Trevorite
Ni
2+
 
Fe
3+
2
O
 
4
4.BB.05Ulvöspinel
Fe
 
2
TiO
 
4
4.BB.05Vuorelainenite
(Mn,Fe)(V,Cr)
 
2
O
 
4
4.BB.05Zincochromite
ZnCr
 
2
O
 
4
4.BB.05Tegengrenite
(Mg,Mn
2+
 
)
 
2
Sb
5+
0.5
(Mn
3+
 
,Si,Ti)
 
0.5
O
 
4
4.BB.10Hausmannite
MnMn
 
2
O
 
4
4.BB.10Hetaerolite
ZnMn
 
2
O
 
4
4.BB.10Hydrohetaerolite
ZnMn
 
2
O
 
4
·H
 
2
O
4.BB.10Iwakiite
Mn(Fe,Mn)
 
2
O
 
4
4.BB.15Maghemite
Fe
 
2
O
 
3
4.BB.15Titanomaghemite
Fe
3+
 
(Fe
3+
 
,Ti
4+
 
,Fe
2+
 
,[])
 
2
O
 
4
Related Minerals - Hey's Index Grouping:
7.19.1Bixbyite
(Mn
3+
 
,Fe
3+
 
)
 
2
O
 
3
7.19.2Janggunite
Mn
 
5-x
(Mn,Fe)
 
1+x
O
 
8
(OH)
 
6
7.19.3Jacobsite
Mn
2+
 
Fe
3+
2
O
 
4
7.19.4Vernadite
(Mn
4+
 
,Fe
3+
 
,Ca,Na)(O,OH)
 
2
 · nH
 
2
O
7.19.5Galaxite
(Mn,Fe,Mg)(Al,Fe)
 
2
O
 
4
7.19.6Filipstadite
(Mn,Mg)
 
2
(Sb
 
.5
Fe
 
.5
)O
 
4
7.19.8Zenzénite
Pb
 
3
(Fe,Mn)
 
4
Mn
 
3
O
 
13

Other Names for Manganochromite

Synonyms:
IMA1975-020
German names:
Manganochromit
Russian names:
Манганохромит
Spanish names:
Manganochromita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Manganochromite

Reference List:American Mineralogist (1978): 63: 1166-1174.

Canadian Mineralogist(1982): 20: 287.

Internet Links for Manganochromite

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  • Raman and XRD data at RRUFF project
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    Localities for Manganochromite

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    The 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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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • South Australia
      • Mt Lofty Ranges
        • South Mt Lofty Ranges
          • Nairne
    		AM 1978, 1166-74
    Sweden
     
    • Östergötland
      • Finspång
        • Doverstorp ore field
    		Min Mag (1997) 61 (1), 145
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