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Igneous rocks classification

Igneous rocks can be classified in two main categories: intrusive rocks and extrusive rocks. Within each of these broad categories, the rocks are classified as acidic, intermediate, basic and ultrabasic on the chemical basis of their silica content or by their mineralogical composition, the proportions of lighter-coloured felsic minerals and darker mafic minerals.

eniscuola energy&environment

"Eniscuola Energy and Environment" is a project run by eni to promote awareness of energy and environmental issues amongst students. In the Italian version, the website also offers digital lessons on Art, Science and English language.

 
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eniscuola energy&environment

"Eniscuola Energy and Environment" is a project run by eni to promote awareness of energy and environmental issues amongst students. \ In the Italian version, the website also offers digital lessons on Art, Science and English language, produced in collaboration with Italian high schools (eniscuola culture and eniscuola in the classroom).

With the sponsorship of the Italian Ministry of Education, Universities and Research
 
Eni S.p.A. - P.IVA 00905811006