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Official US State Symbols
Agricultural Insect, Amphitheater, Arboretum, Bird, Bluegrass Song, Botanical Garden, Bourbon Festival, Butterfly, Center for Celebration of African American Heritage, Covered Bridge, Covered Bridge - Capital of Kentucky, Drink, Fish, Flag, Flower, Fossil, Fruit, Gemstone, Horse, Language, Latin Motto, Mineral, Motto, Musical Instrument, Nicknames, Outdoors Musical of Kentucky , Pipe Band, Pledge, Rock, Science Center, Seal, Silverware Pattern, Soil, Song, State Steam Locomotive, Tree, Tug-of-War Championship, Wild Animal Game Animal
Kentucky State Rock
Fortification (Kentucky) Agate
Adopted on July 14, 2000.
Fortification Agate with red, black and yellow banding became Kentucky's Official State Rock in the year 2000.
These sharp-angled bands resemble the outlines of fortifications of a castle.
This might be confusing, because scientifically agate is considered a variety of the mineral quartz. Minerals are the building blocks of rocks. Agate is considered both a mineral (cryptocrystalline quartz) and a rock, and is formed by chemical precipitation from silica-rich solution in rock cavities. Often characterized by bands of spectacular colors, agate with bright red bands of color found in Kentucky is prized by collectors, and is called Kentucky Agate.
Although rocks are generally thought of as sedimentary, metamorphic, and igneous types, collectors and hobbyists call varieties of some minerals rocks as well. Quartz has many varieties. Naturally occurring chemical impurities in the quartz can cause it to be colored. When different impurities occur in bands within quartz, the quartz will have a colorful, banded appearance, and it is then called agate.
2.091 State rock.
House Bill 123
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