Quartz clasts of uneven thickness, crossed polars
519 بار بازدید -
4 سال پیش
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This is a quartz sandstone
This is a quartz sandstone whose clasts have been ground to uneven thicknesses. Some show the 1st-order gray that quartz displays at 30µ; others show the 1st-order yellows and browns that quartz displays when it's slightly thicker than 30µ.
4 سال پیش
در تاریخ 1399/08/05 منتشر شده
است.
519
بـار بازدید شده