mineralogy

n. branch of science dealing with minerals and classification of minerals

Mineralogy is an Earth Science focused around the chemistry, crystal structure, and physical (including optical) properties of minerals. Specific studies within mineralogy include the processes of mineral origin and formation, classification of minerals, their geographical distribution, as well as their utilization.
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Noun
1. the branch of geology that studies minerals: their structure and properties and the ways of distinguishing them
(hypernym) geology
(class) geode

(n.)
The science which treats of minerals, and teaches how to describe, distinguish, and classify them.
  

(n.)
A treatise or book on this science.
  

n.
علم معدن, دھاتو بديا, (علم معدنيات)