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Suwanose Island, Tokara Archipelago, Kagoshima Prefecture, Nansei Archipelago, Japan

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Very active volcanic island with composite stratovolcano, 790 m high. Composed mainly of pyroxene andesite, sometimes olivine-bearing. Warnings: Much of the island composed of very steep, unstable slopes. Enormous numbers of leaches lurking in damp vegetation!





 Map Reference: 29°38'0"N , 129°42'36"E

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Mineral List:
  		•  Anorthite
    Ca[Al
     
    2
    		Si
     
    2
    		O
     
    8
    		]
    Reference: [Tokiko Tiba (1989) Petrochemistry of the volcanic rocks from Kuchino-shima, Nakano-shima and Suwanose-jima, Tokara Islands. Memoirs of the National Science Museum (Tokyo), 22, 7-19.]
  		•  Augite
    (Ca,Na)(Mg,Fe
    2+
     
    		,Al,Fe
    3+
     
    		,Ti)[(Si,Al)
     
    2
    		O
     
    6
    		]
    Reference: [Tokiko Tiba (1989) Petrochemistry of the volcanic rocks from Kuchino-shima, Nakano-shima and Suwanose-jima, Tokara Islands. Memoirs of the National Science Museum (Tokyo), 22, 7-19.]
  		•  Augite
    var: Titanian Augite
    (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)
     
    2
    		O
     
    6
    Reference: [Alfredo Petrov specimen]
  		•  'Clinopyroxene Subgroup'
    Reference: [Tokiko Tiba (1989) Petrochemistry of the volcanic rocks from Kuchino-shima, Nakano-shima and Suwanose-jima, Tokara Islands. Memoirs of the National Science Museum (Tokyo), 22, 7-19.]
  		•  Enstatite
    Mg
     
    2
    		[SiO
     
    3
    		]
     
    2
    Reference: [Tokiko Tiba (1989) Petrochemistry of the volcanic rocks from Kuchino-shima, Nakano-shima and Suwanose-jima, Tokara Islands. Memoirs of the National Science Museum (Tokyo), 22, 7-19.]
  		•  'Olivine'
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    4
    		]
    Reference: [Tokiko Tiba (1989) Petrochemistry of the volcanic rocks from Kuchino-shima, Nakano-shima and Suwanose-jima, Tokara Islands. Memoirs of the National Science Museum (Tokyo), 22, 7-19.]
  		•  Sulphur
    S
     
    8
    Reference: [Alfredo Petrov specimen]


    7 entries listed. 4 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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