Close to the eastern edge of San Diego County, Anza-Borrego’s Calcite Mine trail offers a wealth of desert beauty — vast views, painted hills, a little history and one of the coolest slot canyons.
Distance from downtown San Diego: 104 miles. Allow almost 3 hours’ driving time (Anza-Borrego Desert State Park). From Ramona, drive east on Hwy 78, turn left on Hwy 79, right on San Felipe Road (S2), ...
Many marine organisms, including corals, build skeletons from calcium carbonate – in the form of calcite or aragonite. The current composition of seawater favors the formation of aragonite – but soft ...
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