灰岩;
;Sand Mineral particles consisting mainly of quartz, felspar, and mica, and measuring between 2 and 0.05mm in diameter.
主要由
英、长、云母等矿物微
，其直径在0.05~2mm之间。
Sand Mineral particles consisting mainly of quartz, felspar, and mica, and measuring between 2 and 0.05mm in diameter.
主要由英、长、云母等矿物微，其直径在0.05~2mm之间。
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