rhyodacite

例句：

1. 1. The rhyodacite from the volcanois a valuable resource for mining.
   这座火山的熔岩灰石是采矿的重要资源。
2. 2. The rhyodacite has aunique mineral composition that makes it highly soughtafter in the market.
   这种熔岩灰石具有独特的矿物组成，使其在市场上非常受欢迎。
3. 3. Therhyodacite depositsare found in many parts of theworld, including China and Brazil.
   熔岩灰石矿床遍布全球各地，包括中国和巴西。