The Pyroxene Chemistry of Four Mesosiderites

The Pyroxene Chemistry of Four Mesosiderites
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四种中菱铁矿的辉石化学

DOI:
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发表时间:
1979
期刊:
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影响因子:
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通讯作者:
R. Hewins
R. Hewins
中科院分区:
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文献类型:
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作者:
R. Hewins

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本文研究的四种中辉石岩的样品与辉石岩和绢英质岩石相似,但其中两种(莫里斯敦和迪尔岛)缺乏在埃斯特维尔和洛维茨发现的镁正辉石。在Estherville源岩中(斜长石结晶之前),在1150 C的Lowicz和Morristown中,以及在Dyarrl Island中(斜长石结晶之后),在1120 C的最低温度下,在1170 C的最低温度下,钙黄长石结晶。
The four mesosiderites studied in the present paper have samples similar to pyroxenitic and noritic rocks, but two of them (Morristown and Dyarrl Island) lack the very magnesian orthopyroxenes found in Estherville and Lowicz. Pigeonite crystallized at minimum temperatures of 1170 C in Estherville source rocks (before plagioclase crystallization), 1150 C in Lowicz and Morristown, and 1120 C in Dyarrl Island (after plagioclase crystallization).