tin placer deposit的意思|示意

Placer tin deposit in xupu occurs in alluvial sediment of quatemary system and cassiterite chiefly concentrates at the bottom of gravel layers.

溆浦砂锡矿床赋存在第四系冲积层中锡石主要富集在底部砂砾石层。

Placer tin deposit in Xupu occurs in alluvial sediment of Quatemary SyStem and CaSSiterite chiefly concentrates at the bottom of Gravel layers.

溆浦砂锡矿床赋存在第四系冲积层中，锡石主要富集在底部砂砾石层。

The basin was filled with thick sediments of Quaternary lake and alluvial facies and accumulated with tin placer which is locally enriched to be commercial deposit.

盆地中充填有第四纪湖相-冲积相厚层沉积，有砂锡聚集，局部富集成矿床。

Thailand is one of main countries producing tin in the world, and its ore deposit types are the shallow-sea deposit placer tin in main.

泰国是世界上产锡的主要国家之一，其矿床类型主要是浅海沉积型砂锡矿。

A middling placer deposit of tin has been discovered in Jiudaowan district.

九道湾地区已发现中型砂锡矿床。