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ferromagnesianContaining iron and magnesium, applied to the mafic minerals. Example: olivine.
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ferromagnesiandescribes rock–forming silicate minerals which contain essential iron (Fe) and/or magnesium (Mg). The most common ferromagnesian minerals include olivine, pyroxene, amphibole and mica.
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ferromagnesianContaining iron and magnesium. Applied to certain dark silicate minerals, especially amphibole, pyroxene, biotite, and olivine.
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ferromagnesian
That contains both iron and magnesium
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