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Hayachine, Kitakami Mts, Iwate Prefecture, Tohoku Region, Honshu Island, Japan

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Metamorphosed serpentine in Ordovician ophiolite. Ref.: Lapis 29(1), 47 (2004)





Mineral List:
  		•  Chesterite
    (Mg,Fe)
     
    17
    		Si
     
    20
    		O
     
    54
    		(OH)
     
    6
    Reference: [Konishi, et al (1991) Abstract of the Meeting of the Mineralogical Society of Japan, 101.]
  		•  'Clinochesterite'
    (Mg,Fe)
     
    17
    		Si
     
    20
    		O
     
    54
    		(OH)
     
    6
    Reference: [Konishi, et al (1992) Abstract of the Meeting of the Mineralogical Society of Japan, 166.]
  		•  Dravite
    [Na][Mg
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [Dr. Yohachiro Okamoto collection (curated at Geological Survey museum, Japan)]
  		•  Jimthompsonite
    (Mg,Fe)
     
    5
    		Si
     
    6
    		O
     
    16
    		(OH)
     
    2
    Reference: [Konishi et al (1991) Koubutsu-Gakkai Kou'en-Youshi, 101.]
  		•  Protoanthophyllite
    ☐[Mg
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Lapis 29(1), 47 (2004)]


    5 entries listed. 4 valid minerals.

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