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Geology: Rocks, Minerals, Crystals & Ores Metamorphic Rocks and Minerals
When rocks undergo extreme changes in temperature and pressure, their internal crystal structure and composition adjust to form new, stable minerals. New elements are not introduced to this metamorphic system. Many metamorphic minerals are mixtures of calcium (Ca), aluminum (Al), manganese (Mn), iron (Fe), and silicon (SiO2). Metals such as iron and titanium bond with oxygen to form magnetite, pyrite, and rutile. Benotite, a rare, blue, barium-titanium silicate mineral fond in hydrothermally altered serpentinite, is California's state gemstone.
Corundum Epidote on grossular Andradite garnet Grossular garnet Grossular garnet Diopside Neptunite Benitoite Joaquinite Vesuvianite Axinite Calcite (blue) Vesuvianite Magnetite Pyrite Rutile Actinolite Inesite Scheelite >> Rocks, Minerals, Crystals & Ores |
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Intro:: Nature:: Map:: Parks:: Points of Interest:: Ghosts & Gold:: Communities:: Roads & Trails:: People & History:: Weather:: :?:: glossary |
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These items are historical in scope and are intended for educational purposes only; they are not meant as an aid for travel planning. Copyright ©Walter Feller. 1995-2024 - All rights reserved. |