Some rocks are mono-mineralic, meaning they only contain one mineral. Limestone, for example, is a sedimentary rock made exclusively of the mineral calcite (CaCO3).

The Yakima Rock and Mineral club will hold its annual show Friday through Sunday April 22-24, 2022, in the Modern Living Building at State Fair Park. This year’s event is the 59th Parade of Gems ...

The rock and mineral show kicked off Thursday morning. You can stop by between 9:30 a.m. to 9 p.m. Friday and 9:30 a.m. to 6 p.m. Saturday. Parking and admission are both free.

GRAND JUNCTION, Colo. (KJCT) - On Sunday, the 77th annual Grand Junction Gem and Mineral Club’s ‘Rock Show’ got set up at the Mesa County Fair Grounds.

CARBONDALE — Southern Illinois University Carbondale’s geology program will host a rock and mineral clinic during a local gathering for mineral enthusiasts. The clinic, set for 10 a.m. to 5 p ...