Geol. is a geology blog sharing the wonders of our planet, from rocks to tectonics, in simple and enjoyable ways. Explore and enjoy Earth’s fascinating stories!
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Hornblende
Hornblende is a group of inosilicate minerals in the amphibole family. Typically dark green to black in color, hornblende is rich in iron and magnesium, with traces of aluminum, calcium, and sodium.
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