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Kamiokite

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Vrchoslav fluorite deposit, Krupka (Graupen), Krušné Hory Mts (Erzgebirge), Ústí Region, Bohemia (Böhmen; Boehmen), Czech Republic

Formula:
Fe
 
2
Mo
 
3
O
 
8
System:HexagonalColour:Black, grey with olive ...
Lustre:Metallic, Sub-MetallicHardness:4½
Name:Named after its type locality mine.
This page provides mineralogical data about Kamiokite.

Classification of Kamiokite

IMA status:Approved
Strunz 8th edition ID:4/C.07-30
Nickel-Strunz 10th (pending) edition ID:4.CB.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations
Dana 8th edition ID:7.6.3.1

7 : MULTIPLE OXIDES
6 : (AB)5X8
Hey's CIM Ref.:27.3.13

27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates
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Type Occurrence of Kamiokite

Type Locality:Tochibora deposit, Kamioka mine, Hida City, Gifu Prefecture, Chubu Region, Honshu Island, Japan
Place of Conservation of Type Material:Geology Museum (Geological Survey of Japan)
Year of Discovery:1975
Geological Setting of type material:Vein in a skarn

Physical Properties of Kamiokite

Lustre:Metallic, Sub-Metallic
Diaphaneity (Transparency):Opaque
Colour:Black, grey with olive tint in reflected light
Streak:Black
Hardness (Mohs):4½
Hardness (Vickers):VHN50=600 kg/mm2 (15 s test time)
Cleavage:Distinct/Good
one distinct on [0001]
Density (measured):5.96 g/cm3
Density (calculated):6.02 g/cm3

Crystallography of Kamiokite

Crystal System:Hexagonal
Cell Parameters:a = 5.77Å, c = 10.05Å
Ratio:a:c = 1 : 1.742
Unit Cell Volume:V 289.77 ų (Calculated from Unit Cell)

Optical Data of Kamiokite

Type:Anisotropic
Anisotropism:Strong - light brownish gray to dark greenish gray
Colour in reflected light:grey, olive tint
Internal Reflections:None

Chemical Properties of Kamiokite

Formula:
Fe
 
2
Mo
 
3
O
 
8
Essential elements:Fe, Mo, O
All elements listed in formula:Fe, Mo, O

Relationship of Kamiokite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.CB.05Brizziite
NaSb
5+
 
O
 
3
4.CB.05Corundum
Al
 
2
O
 
3
4.CB.05Ecandrewsite
(Zn,Fe
2+
 
,Mn
2+
 
)TiO
 
3
4.CB.05Eskolaite
Cr
 
2
O
 
3
4.CB.05Geikielite
MgTiO
 
3
4.CB.05Hematite
Fe
 
2
O
 
3
4.CB.05Ilmenite
Fe
2+
 
TiO
 
3
4.CB.05Karelianite
V
 
2
O
 
3
4.CB.05Melanostibite
Mn
2+
 
(Sb
5+
 
,Fe
3+
 
)O
 
3
4.CB.05Pyrophanite
Mn
2+
 
TiO
 
3
4.CB.05Akimotoite
(Mg,Fe
2+
 
)SiO
 
3
4.CB.05Auroantimonate
AuSbO
 
3
4.CB.05Romanite
([],Pb,Ca)UFe
2+
2
(Ti,Fe
3+
 
)
 
6
Ti
 
12
O
 
38
4.CB.05UM1998-11-O-AuHSb
Au
 
2
SbO
 
2
(OH)
4.CB.05Tistarite
Ti
 
2
O
 
3
4.CB.10Avicennite
Tl
 
2
O
 
3
4.CB.10Bixbyite
(Mn
3+
 
,Fe
3+
 
)
 
2
O
 
3
4.CB.15Armalcolite
(Mg,Fe
2+
 
)Ti
 
2
O
 
5
4.CB.15Pseudobrookite
Fe
 
2
TiO
 
5
4.CB.15Mongshanite
(Mg,Cr,Fe
2+
 
)
 
2
(Ti,Zr)
 
5
O
 
12
4.CB.20Zincohögbomite-2N2S
(Zn,Al,Fe)
 
2
(Al,Fe,Ti)
 
8
O
 
15
(OH)
4.CB.20Zincohögbomite-2N6S
(Zn,Al)
 
7
(Al,Fe,Ti,Mg)
 
16
O
 
31
(OH)
4.CB.20Magnesiohögbomite-6N6S
(Mg,Al,Fe)
 
2
(Al,Ti)
 
8
O
 
15
(OH)
4.CB.20Magnesiohögbomite-2N3S
(Mg,Fe,Zn,Ti)
 
3
(Al,Fe)
 
10
O
 
19
(OH)
4.CB.20Magnesiohögbomite-2N2S
(Mg,Al,Fe)
 
2
(Al,Fe,Ti)
 
8
O
 
15
(OH)
4.CB.20Ferrohögbomite-6N12S
(Fe,Mg,Zn)
 
4
(Al,Ti,Fe)
 
12
O
 
23
(OH)
4.CB.25Pseudorutile
Fe
 
2
Ti
 
3
O
 
9
4.CB.30Berdesinskiite
V
3+
2
TiO
 
5
4.CB.30Oxyvanite
V
 
3
O
 
5
4.CB.35Olkhonskite
(Cr,V)
 
2
Ti
 
3
O
 
9
4.CB.35Schreyerite
V
 
2
Ti
 
3
O
 
9
4.CB.40Nolanite
(V,Fe,Fe,Ti)
 
10
O
 
14
(OH)
 
2
4.CB.40Rinmanite
Zn
 
2
Sb
 
2
Mg
 
2
Fe
 
4
O
 
14
(OH)
 
2
4.CB.45Claudetite
As
 
2
O
 
3
4.CB.45Stibioclaudetite
AsSbO
 
3
4.CB.50Arsenolite
As
 
2
O
 
3
4.CB.50Sénarmontite
Sb
 
2
O
 
3
4.CB.55Valentinite
Sb
 
2
O
 
3
4.CB.60Bismite
Bi
 
2
O
 
3
4.CB.65Sphaerobismoite
Bi
 
2
O
 
3
4.CB.70Sillénite
Bi
 
12
SiO
 
20
4.CB.75Kyzylkumite
V
 
2
Ti
 
3
O
 
9
4.CB.80Tietaiyangite
Fe
3+
4
Fe
2+
 
TiO
 
9
Related Minerals - Hey's Index Grouping:

- +
27.3.1Lindgrenite
Cu
 
3
[OH|MoO
 
4
]
 
2
27.3.2Powellite
Ca[MoO
 
4
]
27.3.3Wulfenite
Pb[MoO
 
4
]
27.3.4Koechlinite
(BiO)
 
2
[MoO
 
4
]
27.3.5Sedovite
U(MoO
 
4
)
 
2
27.3.6Mourite
UMo
 
5
O
 
12
(OH)
 
10
27.3.7Iriginite
UO
 
2
Mo
 
2
O
 
7
·3H
 
2
O
27.3.8Umohoite
(UO
 
2
)MoO
 
4
·4H
 
2
O
27.3.9Moluranite
H
 
4
U
4+
 
(UO
 
2
)
 
3
(MoO
 
4
)
 
7
·18H
 
2
O
27.3.10Cousinite
MgU
 
2
Mo
 
2
O
 
11
·6H
 
2
O
27.3.11Calcurmolite
(Ca,Na)
 
2
(UO
 
2
)
 
3
Mo
 
2
(O,OH)
 
11
·nH
 
2
O
27.3.12Tengchongite
CaO·6UO
 
3
·2MoO
 
3
·12H
 
2
O
27.3.14Ferrimolybdite
Fe
 
2
[MoO
 
4
]
 
3
 · nH
 
2
O

Other Names for Kamiokite

Synonyms:
IMA1975-003
Other Languages:
German:Kamiokit
Russian:Камиокит
Spanish:Kamiokita

Other Information

Other Information:Slowly etched by nitric acid, not affected by hydrochloric
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 Kamiokite

Reference List:Mineral.Journ.Japan (1985) 12, 393-399

American Mineralogist (1983): 68: 1038-1039.

American Mineralogist (1988): 73: 191.

Acta Crystallographica: C42: 9-11.

Internet Links for Kamiokite

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  • Raman and XRD data at RRUFF project
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  • Kamiokite details from Handbook of Mineralogy (PDF)
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    Localities for Kamiokite

    Hide Locality List
    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.
    (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.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
          • Krupka (Graupen)
    		Sejkora, J., Breiter, K.: Historický rudní revír Krupka, Krušné hory. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1999, roč. 7, s. 29-45.
    Japan
     
    • Honshu Island
      • Chubu Region
        • Gifu Prefecture
          • Hida City
            • Kamioka mine
    		Mineral.Journ.Japan (1985) 12, 393-399
    Mexico
     
    • Chihuahua
      • Pueblito de Allende
    		72nd Meteor.Soc. Meeting, Abs. 5090(2009)
    USA
     
    • Michigan
      • Keweenaw Co.
        • Ahmeek
    		American Mineralogist,Volume 68, pages1038-1041 1983
        • Mohawk
    		American Mineralogist,Volume 68, pages1038-1041 1983
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 14th Nov 2009 17:45:45