Contributed by @plazmatter0430
Heavily oxidized chips of Manganese, and a large slightly-brassy-tarnished chunk of Manganese
Contributed by collector no. 4
Manganese group (not including Technetium ): Heavily oxidized Manganese chips, and a small Rhenium piece in bottles
Contributed by collector no. 3
Manganese and Rhenium . Between these two samples is a large gap where Technetium would be, but Technetium is radioactive and samples are hard to obtain.
A small shiny chunk of Manganese metal, and heavily oxidized pieces in a small jar
Contributed by collector no. 2
Moderately oxidized chips of Manganese metal with a very bumpy surface, in a small bottle with lid
Very shiny small irregular chunks of Manganese metal with a slightly gold hue
Manganese oxide from a battery. Do not try this at home!
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