著者

皆川 鉄雄 西尾 大輔

出版者

愛媛大学

雑誌

愛媛大学理学部紀要 (ISSN:09195203)

巻号頁・発行日

no.9, pp.17-68, 2004-03-22

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Mineral species discovered from Shikoku as of December 2003, amount to 437, are listed in this paper together with ideal chemical composition, crystal system and mode of occurrence of these minerals, and photographs of 48 mineral species. They are consisted of 10 Native elements, 45 Sulfides, 5 Halides, 60 Oxides, 29 Carbonates, 3 Borates, 30 Sulphates, 5 Molybdates and Tangstates, 26 Phosphates and Arsenates, 225 Silicates and 5 organic matter. In Shikoku, 7 new minerals as follows: Takanelite, Sugilite, Tobelite, Katayamalite, Stronalsite, Potassic-sadanagaite and Potassic magnesiosadanagaite have been discovered, and Oyamalite, Hagatalite, Tosalite and Dosulite have been reported as varieties before now. This mineral list is a one of geological data collection which indicates the features of rocks in the area of Shikoku.

著者

皆川 鉄雄 安岡 利津子

出版者

愛媛大学理学部紀要委員会

雑誌

愛媛大学理学部紀要 (ISSN:09195203)

巻号頁・発行日

vol.14, pp.11-17, 2008

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Calcian strontianite was newly found from Torinosu limestone distributed in the Nagano, Tokaji, Furuhata, and Nishiyama areas other than the Shimomitogi (MINAKAWA, 1955). It occurs as authigenic mineral in cavities in limestone and calcite veins, associated with calcite, dolomite, fluorite ,celestine, barite, quartz and oil. It is radial aggregates of acicular and short prismatic crystals up to 1cm length, colorless with vitreous luster. Chemical compositions of strontianite estimated by X-ray powder data of d(132)Å and EDS qualitative analysis varies from SrCO_3 75mol%, CaCO_3 25mol% to SrCO_3 85mol%, CaCO_3 15mol%. It is estimated that Sr derived from coral, calcareous algae and foraminifera which formed the coral reef.