Minerals identify

Know how to recognize them



Macaulayite is a red, earthy, monoclinic , with the chemical formula (Fe 4O It was discovered in the 1970s by Dr Jeff Wilson and named after the Macaulay Institute. The only known source of macaulayite in the world is a quarry at the foot of Bennachie which has been weathered by tropical climates from before the last Ice Age, as it is speculated that this is the substance which gives the planet Mars its colour and it could prove that life on Mars can be sustained.


The streak


Crystal ( diaphaneity )