SEM photographs show that pyrites occurred in forms of both micro-spheroids and cubic crystal aggregations, caused by microbial fossilization and inorganic processes, respectively.
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释义
扫描电镜(SEM)照片显示黄铁矿以微球粒状和立方体状形貌产出,其成因与微生物作用和无机作用有关。
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