Very slightly calcros, fine sand lower to fine sand upper, occasionally medium sand upper, moderately sorted, sub rounded to sub angular, sub spherical, colorless, white, yellowish white, loose on surface.

The text above was approved for publishing by the original author.

Previous       Next

免费试用

请输入您的信息
请选择修正的语言

查看我们的 校对API服务.

eAngel.me

eAngel.me is a human proofreading service that enables you to correct your texts by live professionals in minutes.