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Ohio has varied natural resources. In 2016, 64.92 million tons of limestone and dolomite valued at $615 million was quarried, along with 12.23 million tons of coal, worth $541 million. Sand and gravel, salt, sandstone and conglomerate all have production over one million tons. Shale and clay are also quarried.
Leaders of states in the U.S. which have significant mineral deposits often create a state mineral, rock, stone or gemstone to promote interest in their natural resources, history, tourism, etc. Not every state has an official state mineral, rock, stone and/or gemstone, however.
Aquamarine variety of beryl with tourmaline on orthoclase. Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico. Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals. Austinite from the Ojuela Mine, Mapimí, Durango, Mexico. Ametrine containing amethyst and citrine, from Bolivia.
Washington state is a hotbed for minerals, gemstones, crystals and fossils, making the Evergreen state a popular site for rockhounding. Whether in an official group or going solo, rockhounding is ...
Coal – Combustible sedimentary rock composed primarily of carbon. Conglomerate – Sedimentary rock composed of smaller rock fragments. Coquina – Sedimentary rock that is composed mostly of fragments of shells. Diamictite – Type of sedimentary rock. Diatomite – Soft, siliceous sedimentary rock that is easily crumbled.
Columbus, Ohio. Named by. Mathur, 1859. Side view of a stromatoporoid in the Columbus Limestone at Kelleys Island. The Columbus Limestone is a mapped bedrock unit consisting primarily of fossiliferous limestone. It occurs in Ohio, Pennsylvania, and Virginia in the United States, and in Ontario, Canada.