Manganese metal belongs to the transition group.
Manganese metal easily oxidizes turning brown its surface, and if its react with acid like hydrochloric acid turn blue due to the reaction and the production of the chloride. Manganese metal is a very common material and it is often used in alloys. Manganese metal is an important ingredient in many steels. Manganese metal can be found in nature in large quantities in many minerals. Its probably most famous compound is the strong oxidizing agent potassium permanganate. Every life form needs small amounts of manganese.
Amazing Manganese metal standard density cube 10x10x10mm, 99.99% pure. the sample weighs 7.2 grams which is the theoretical density of the Manganese metal element. This cube is amazing for any science classrooms, schools, universities and collectors. Pure Manganese metal cube for element collection.
The making of this cubes is very difficult and the price reflects all the handling and manufacturing process.