pyrolusite

A mineral composed primarily of manganese dioxide, which serves as a significant ore for the extraction of manganese.

• 🇨🇳一种主要由二氧化锰组成的矿物，是提取锰的重要矿石。

1. Manganese dioxide mineral C2 formal scientific

   A black or dark gray mineral composed of manganese dioxide, commonly found in sedimentary deposits and used as an important ore of manganese.

   • Pyrolusite is often found in association with other manganese minerals.
   • The black powder in some dry cell batteries is derived from pyrolusite.
   • Geologists identified the deposit as rich in pyrolusite.

   🇨🇳软锰矿

• pyrolusites plural form
• pyrolusites' possessive plural form
• pyrolusite's possessive singular form