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Calcite on Quartz<br />Mina Sheffler's Rock Shop and Geode, Alexandria, Condado Clark, Missouri, USA<br />the geode cavity is about 18 cm and the largest calcites are about 3.5 cm<br /> (Author: Bob Harman)

Calcite on Quartz
Mina Sheffler's Rock Shop and Geode, Alexandria, Condado Clark, Missouri, USA
the geode cavity is about 18 cm and the largest calcites are about 3.5 cm
(Author: Bob Harman)