Page 60 - The Periodic Table Book

25
Mn Manganese

25 25 30 State: Solid
Discovery: 1774
Transition Metals Transparent, rose- was purified
Forms

Manganese
coloured crystal
Shiny,
from pyrolusite
metal
for the first time silvery
in 1774.
Rhodochrosite

Pyrolusite

This mineral is made
of manganese dioxide.

Like magnesium, this element gets its hard, and brittle. This element is present
name from the Greek region of Magnesia. in seawater as the compounds manganese
There are many manganese minerals, including hydroxide and manganese oxide, which have
the colourful mineral rhodochrosite. The pure built up in layers over millions of years to form
form of the metal is obtained mainly from the masses on the sea bed. The human body needs
58 ore pyrolusite. Pure manganese is dense, a tiny amount of manganese, which we can get

058-059_Manganese.indd 58 12/12/16 5:37 pm