"Prof Hugo Strunz introduced a chemical-structural
classification of the entire
domain of minerals (Mineralogische Tabellen, 1941), followed by
A.S.Povarennykh with a modified classification (1966 in Russian, 1972 in
English). The chemical-structural classification of H. Strunz has gone
through a number of editions, and is currently in the process of being
refined in the light of recent crystal-structure determinations
(Nickel-Strunz Version 10) by the late Ernest H. Nickel and others. In
the current system, minerals are divided into 10 major compositional
classes (1)elements, 2)sulfides,
3)halides, 4)oxides,
5)nitrates, carbonates, 6)borates,
7)sulfates, 8)phosphates,
9)silicates, 10)organic
compounds) which are subdivided into divisions, families and groups
on the basis of chemical composition and crystal structure." (See IMA
Commission on
Classification of Minerals (CCM) activity report)
The Strunz classification scheme used
in this database has been provided by James A. Ferraiolo.