Download Four main magma families. | GEOL - Geology 1 - Introduction and more Quizzes Geology in PDF only on Docsity!
Ultra Basic (Ultramafic) Essential Minerals Olivine (green color), Pyroxenes (dark color), and sometimes Calcium Plagioclase TERM 2 Ultra Basic (Ultramafic) Common Rocks DEFINITION 2 Peridotite (below surface) and Komatiite (at surface) TERM 3 Ultra Basic (Ultramafic) % of SiO DEFINITION 3 38% - 43% TERM 4 Basic (Mafic) Essential Minerals DEFINITION 4 Pyroxenes (dark color) and a Calcic Plagioclase (usually Bytownite or Labradorite) (dark gray color) TERM 5 Basic (Mafic) Common Rocks DEFINITION 5 Gabbro (below surface) and Basalt (at surface)
Basic (Mafic) % of SiO 43% - 54% TERM 7 Intermediate Essential Minerals DEFINITION 7 Amphibole (black color) and Oligoclase (white color). These rocks usually have a salt and pepper look to them. TERM 8 Intermediate Common Rocks DEFINITION 8 Diorite (below surface) and Andesite (at surface) TERM 9 Intermediate % of SiO DEFINITION 9 54% - 63% TERM 10 Acidic (Felsic) Essential Minerals DEFINITION 10 Quartz (clear, gray, glassy color), Alkali Feldspar (pink color), and Albite (gray/white color).
