geologist
A mineralogist studies minerals.
It wouldn't be a chemist; a type of scientist called a petrologist or mineralogist studies rocks and their minerals.
Mineralogists
The name for this type of scientist is a teuthologist
A geological scientist studies rock and stones.
a type of scientist who studies about metal is called metallururgist
A geologist.
A scientist who studies animal life is a zoologist. There is no particular name for a scientist that specialises in platypuses.
The type of scientist that studies the environment is an enviromentologist.
what scientist studies hydrogen and oxygen
chromotologists