How hard is a diamond? What is the difference between granites and garnets? Minerals are the building blocks of rocks. They are inorganic, crystalline solids with a known chemistry. Examples of ...

What are Ukraine’s rare earth minerals, where are they and what does this deal with Trump involve? - More than 50 per cent of ...

Petrology is the study of rocks - igneous, metamorphic, and sedimentary - and the processes that form and transform them. Mineralogy is the study of the chemistry, crystal structure and physical ...