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Yaguki mine, Iwaki, Fukushima Prefecture, Tohoku Region, Honshu Island, Japan

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Skarn-type tungsten deposit.

Ref.:
- Werner, A.B.T., Sinclair, W.D., and Amey, E.B. (1998): International Strategic Mineral Issues Summary Report - Tungsten. US Geological Survey Circular 930-O.





 Map Reference: 37°14'N , 140°43'E

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Mineral List:
  		•  Babingtonite
    Ca
     
    2
    		(Fe,Mn)FeSi
     
    5
    		O
     
    14
    		(OH)
    Reference: [The Mineral Species of Japan (5th ed) Matsubara]
  		•  Bornite
    Cu
     
    5
    		FeS
     
    4
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Chamosite
    (Fe
    2+
     
    		,Mg)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Clinozoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Cosalite
    Pb
     
    2
    		Bi
     
    2
    		S
     
    5
    Reference: [Alfredo Petrov collection]
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Grossular
    Ca
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Hedenbergite
    CaFe
    2+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Heyrovskýite
    Pb
     
    10
    		AgBi
     
    5
    		S
     
    18
    Reference: [Alfredo Petrov collection (obtained from Dr. Ryuji Marumoto)]
  		•  Mackinawite
    (Fe,Ni)
     
    9
    		S
     
    8
    Reference: [Zohka, H. et al (1972) Compositional variations in natural mackinawites and the results of heating experiments. Journal of Science of the Hiroshima University, series C, Geology and Mineralogy, 7, #1, 37-53.]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Quartz
    SiO
     
    2
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Scheelite
    Ca[WO
     
    4
    		]
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Sepiolite
    Mg
     
    4
    		Si
     
    6
    		O
     
    15
    		(OH)
     
    2
    		·6H
     
    2
    		O
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan); Econ Geol (1994) 89:1567-1580]
  		•  Talc
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: [Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)]


    18 entries listed. 18 valid minerals.

    The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
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