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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),
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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