datholite

例句：

1. 1.The ancient city is buried under a thick layer of datholite.
   这个古老的城市被厚厚的地层石所埋藏。
2. 2.The geologist found a datholite that could be used as a building material.
   地质学家发现了一种可以用来作为建筑材料的地层石。
3. 3. The datholite formation is famous for its unique mineral composition.
   地层石形成因其独特的矿物组成而闻名。