skarn

例句：

1. 1. The skarn is a type of mineral deposit that contains iron and manganese.
   矿床是一种含有铁和锰的矿物沉积。
2. 2. The geologist found the skarn in the area where the volcanic activity was most intense.
   地质学家在火山活动最强烈的地区发现了矿床。
3. 3. Skarn formations are important for understanding the history of Earth's crust.
   矿床形成对于理解地球地壳的历史非常重要。