ferrithorite

例句：

1. 1. The iron pentoxide is used in the production of ceramics.
   铁钒石用于陶瓷的生产。
2. 2.The iron pentoxide reacts with water to form a reddish-brown solution.
   铁钒石与水反应生成一种红棕色溶液。
3. 3. The iron pentoxide is a common mineral found in many soils.
   铁钒石是一种常见的矿物，存在于许多土壤中。