北海道，幌満かんらん岩体中の硫化鉱物

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タイトル別名
  • Sulfide minerals from the Horoman peridotite, Hokkaido, Japan.
  • ホッカイドウ ホロマンカンランガンタイ チュウ ノ リュウカ コウブツ

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抄録

Ni-bearing minerals such as pentlandite, heazlewoodite, unknown sulfide minerals X, Y and Z are found in the Horoman peridotite, Hokkaido, Japan. Cu-rich mineral of talnakhite, bornite and native copper also occurs associating with Ni-bearing minerals. Pentlandite has the compositional range from 4.276 to 5.238 in atomic ratio of Fe (total atoms=17) changing coexisting minerals. Unknown sulfide mineral X has composition with Cu: 0.010∼0.144, Fe: 5.573∼6.044: Ni: 2.800∼3.392, Co: 0.047∼0.109, S: 7.884∼8.109 in atomic ratio (total atoms=17) and its ideal formula is (Fe, Cu)6Ni3S8. The compositional range of unknown sulfide mineral Y is Cu: 0.573∼1.003, Fe: 5.783∼6.154: Ni: 1.875∼2.392, Co: 0.012∼0.036, S: 7.953∼8.099 in atomic ratio (total atoms=17), and most copper rich end corresponds to CuFe6Ni2S8. Unknown sulfide mineral Z has ideal formula of Cu2Fe5Ni2S8. Pentlandite and unknown sulfide mineral X occur as primary minerals in the peridotite. Talnakhite and bornite are also found and has their ideal compositions.

収録刊行物

  • 岩鉱

    岩鉱 93 (10), 369-379, 1998

    一般社団法人　日本鉱物科学会

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