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单词 alkali feldspar
释义

alkali feldspar

noun Geology
Any of the group of feldspars rich in sodium and/or potassium.Olson states that the first mineral to be deposited was a reddish alkali feldspar, followed by abundant deposition of epidote and smaller amounts of pumpellyite....
  • Of these, alkali feldspar, particularly orthoclase, is the most common.
  • The first phase of diagenetic albite constitutes an impure, turbid variety including albitized grains of original plagioclase and alkali feldspar.
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更新时间:2024/12/22 18:32:06