Mn-Pyroxenes from Gangpur Group of rocks, Goriajhar, Orissa, India.

• NAYAK B.R.

  Regional Research Laboratory (CSIR)

• MOHAPATRA B.K.

  Regional Research Laboratory (CSIR)

• SAHOO R.K.

  Regional Research Laboratory (CSIR)

書誌事項

タイトル別名

• Mn-pyroxenes from Gangpur Group of rock

抄録

Mn-pyroxenes in Gangpur Group of rocks around Goriajhar area, Sundargarh district, Orissa, India, are recorded in two different assemblages, namely: Mn silicate-oxide and Mn silicate-oxide-carbonate rocks. The petrography and chemical composition of these pyroxenes indicate them to be Mn-aegirines. These pyroxenes, with the composition Na_0.84-1.01 Ca_0.04-0.12 Mn_0.03-0.14 Mg_0.02-0.05 Fe³⁺_0.83-0.95 Al_0.02-0.05 [Si_1.92-1.98 O₆], usually show ∼7 mol.% of johannsenite component in the carbonate assemblage with low diopside (∼4 mol.%) and jadeite (<2.5 mol.%) components in both the assemblages. Presence of fine hematite needles within the aegirines is the result of high grade metamorphism (almandine-amphibolite facies) in the area.

収録刊行物

• 岩鉱

  岩鉱 92 (10), 425-430, 1997

  一般社団法人　日本鉱物科学会

キーワード

• Pyroxenes
• Mn-aegirines
• Goriajhar
• Gangpur Group of rocks
• India

詳細情報

• CRID: 1390282681211736832
• NII論文ID: 10002089478
• NII書誌ID: AN10047992
• DOI: 10.2465/ganko.92.425
• COI: 1:CAS:528:DyaK1cXjs1ahsg%3D%3D
• ISSN: 18813275
• ISSN: 09149783
• NDL書誌ID: 4378232
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4378232
• 本文言語コード: en
• データソース種別:
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  • NDL
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