Science

Pyrolusite

December 26, 2017 // 0 Comments

What is Pyrolusite? Pyrolusite is a dark black or grey mineral, but it can sometimes have a tint of blue. It has a streak of [...]

Calcite

August 17, 2017 // 0 Comments

What is Calcite? Calcite is a carbonate mineral, which means it contains a carbonate ion. The chemical formula of calcite is [...]

Magnetite

August 16, 2017 // 0 Comments

What is Magnetite? Magnetite is the most common iron oxide mineral. With a chemical formula of Fe3o4, it has the highest [...]
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