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- 砂川 一郎
- 東北大学理学部
書誌事項
- タイトル別名
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- Nambulite and Sugilite : Two New Minerals Found in Japan and Later Found as Gem Materials
- ナンブセキ ト スギセキ ニホン デ シン コウブツ ト シテ ハッケンサレ
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抄録
Nambulite, LiNaMn_8Si_<10>O_<28>(OH)_2, and sugilite, (K, Na) C(H_2O), Na]_2 (Fe^<3+>, Na, Ti, Fe^<2+>)_2 (Li, Al, Fe^<3+>)_3 Si_<12>O_<30>, are two new minerals found and described for the first time in Japan. At the time of findings of the two minerals, no body imagined that these could be gem materials. But, recently, two minerals of gem quality have been found in Africa. Nambulite found at Kombat, Tsumeb, Nambia is deep red in colour and transparent, attaining 3cm in length, and cuttable as facet stones. Sugilite found in Wessels mine, Karahali manganese field, Cape Province, South Africa is violet in colour, and translucent, beautiful enough for cabochon cutting. This was at first reported as sogdianite, but later was identified as sugilite. Both are most unusual cases for new minerals found in Japan, and thus are introduced in this paper.
収録刊行物
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- 宝石学会誌
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宝石学会誌 9 (2-3), 55-60, 1982
宝石学会(日本)
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詳細情報 詳細情報について
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- CRID
- 1390282680140936704
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- NII論文ID
- 110003324076
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- NII書誌ID
- AN00226317
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- ISSN
- 21898413
- 03855090
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- NDL書誌ID
- 2464637
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可