Igneous Minerals


Igneous minerals are very common.

The typical ones are common minerals such as quartz, feldspar, mica, amphiboles, pyroxenes and olivine





As in most rocks, silica minerals are the dominating part, with quartz, cristobalite, tridymite;

feldspars such as plagioclase (albite and anothrthite), alkali feldspars (microcline, orthoclase and sanidine), feldspathoids (sodalite, leucite, nepheline),

 igneous minerals
 Minerals in granite. Poster by AllPosters. Click on thumbnail to buy

orthosilicates such as olivine (fosterlite and fayalite),

garnets such as grossular, spessartine, pyrope and almandine;

pyroxenes such as clinopyroxene (jadeite, acmite, augute, hedenbergite, diopside), orthopyroxenes (enstatite and ferrosilite);

amphiboles such as rieberkite, hornblende, actinolite and tremolite;

ring silicates such as tourmaline and cordierite; and

sheet silicates such as chlorite, serpentine and

micas (muscovite and biotite).

Other found in igneous rocks are sulfides (pyrite, chalcopyrite, pyrrhotite and pentlandite);

oxides (spinel, magnetite, chromatite, hematite, ilmenite and perovskite);

carbonates (calcite, dolomite and mangesite); phosphates (apatite and monazite); and halides (fluorite).













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