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Mogurazawa mine, Kiryuu City, Gunma Prefecture, Kanto Region, Honshu Island, Japan

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Metasedimentary manganese ore hosted in Jurassic chert. Famous for its tiny quantities or rare vanadium-bearing minerals.



References:
Min.Journ.Japan (1982) 11, 15-20





Mineral List:
  		•  Alabandite
    Mn
    2+
     
    		S
    Reference: [Am Min 66:638; Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.; Min.Journ.Japan (1982) 11, 15-20]
  		•  Alleghanyite
    Mn
    2+
    5
    		[(OH)
     
    2
    		|(SiO
     
    4
    		)
     
    2
    		]
    Reference: [Masutomi Museum specimen (Kyoto)]
  		•  Baryte
    BaSO
     
    4
    Reference: [Am Min 66:638; Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.; Min.Journ.Japan (1982) 11, 15-20]
  		•  Bornite
    Cu
     
    5
    		FeS
     
    4
    Reference: [Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.; Min.Journ.Japan (1982) 11, 15-20]
  		•  Calcite
    var: Manganoan Calcite
    (Ca,Mn)CO
     
    3
    Reference: [Min.Journ.Japan (1982) 11, 15-20]
  		•  Digenite
    Cu
     
    9
    		S
     
    5
    Reference: [Min.Journ.Japan (1982) 11, 15-20]
  		•  Gersdorffite
    NiAsS
    Reference: [Min.Journ.Japan (1982) 11, 15-20]
  		•  Hausmannite
    MnMn
     
    2
    		O
     
    4
    Reference: []
  		•  Helvite
    Mn
    2+
    4
    		Be
     
    3
    		[S|(SiO
     
    4
    		)
     
    3
    		]
    Reference: []
  		•  Jacobsite
    Mn
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: []
  		•  'Manganese Oxides'
    Reference: [Alfredo Petrov collection]
  		•  Manganosite
    MnO
    Reference: [Alfredo Petrov collection]
  		•  Nagashimalite (TL)
    Ba
     
    4
    		(V,Ti)
     
    4
    		B
     
    2
    		Si
     
    8
    		O
     
    27
    		(O,OH)
     
    2
    		Cl
    Type Locality: Mogurazawa mine, Kiryuu City, Gunma Prefecture, Kanto Region, Honshu Island, Japan
    Reference: [Mineral.Journ.Japan (1980) 10, 122-130]
    Site Photo
    Mogurazawa mine, Kiryuu City, Gunma Prefecture, Kanto Region, Honshu Island, Japan
    © 2008, J. Weissman
  		•  Pyrochroite
    Mn(OH)
     
    2
    Reference: []
  		•  Quartz
    SiO
     
    2
    Reference: [Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.; Min.Journ.Japan (1982) 11, 15-20]
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [Am Min 66:638; Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.; Min.Journ.Japan (1982) 11, 15-20]
  		•  Rhodonite
    MnSiO
     
    3
    Reference: [Am Min 66:638; Min.Journ.Japan (1982) 11, 15-20]
  		•  Roscoelite
    K(V,Al)
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Am Min 66:638; Min.Journ.Japan (1982) 11, 15-20]
  		•  Suzukiite (TL)
    BaVSi
     
    2
    		O
     
    7
    Type Locality: Mogurazawa mine, Kiryuu City, Gunma Prefecture, Kanto Region, Honshu Island, Japan
    Reference: [Min.Journ.Japan (1982) 11, 15-20]
    Site Photo
    Mogurazawa mine, Kiryuu City, Gunma Prefecture, Kanto Region, Honshu Island, Japan
    © 2008, J. Weissman
  		•  Tephroite
    Mn
    2+
    2
    		[SiO
     
    4
    		]
    Reference: [Alfredo Petrov collection]
  		•  Tetrahedrite
    (Cu,Fe,Ag,Zn)
     
    12
    		Sb
     
    4
    		S
     
    13
    Reference: [Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.; Min.Journ.Japan (1982) 11, 15-20]
  		•  Wiserite
    (Mn,Mg)
     
    14
    		[Cl|(OH)
     
    8
    		|(Si,Mg)(O,OH)
     
    4
    		|(B
     
    2
    		O
     
    5
    		)
     
    4
    		]
    Reference: []


    22 entries listed. 20 valid minerals. 2 type localities (valid minerals).

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