STATE |
ROCK |
MINERAL |
GEMSTONE |
FOSSIL |
Notes of Interest |
Alabama |
Marble |
Hematite |
Star Blue Quartz |
Whale - Basilosaurus cetoides
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Fossil remains of the Basilosaurus cetoides may not be removed from the state without prior written approval of the governor. |
Alaska |
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Gold |
Jade |
Wooly Mammoth |
Alaska has large deposits of the jade, including an entire mountain of jade on the Seward Peninsula. |
Arizona |
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Turquoise |
Petrified wood |
Turquoise can be found throughout the Southwest and is composed of hydrous oxide of aluminum and copper. |
Arkansas |
Bauxite |
White Quartz |
Diamond |
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Arkansas is the only diamond-producing state in the United States. John M Huddleston found the first diamonds near Murfreesboro in 1906. |
California |
Serpentine |
Gold |
Benitoite |
Saber Toothed Cat |
Sometimes called the " blue diamond", benitoite was first discovered near the headwaters of the San Benito River. |
Colorado |
Yule marble |
Rhodochrosite |
Aquamarine |
Stegosaurus |
The world's largest Rhodochrosite crystal, called the Alma King, was found in the Sweet Home Mine near Alma (Park County), Colorado |
Connecticut |
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Garnet |
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Eubrontes giganteus |
Connecticut is one of the finest sources in the world of the almandine garnet. |
Delaware |
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Sillimanite |
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Belemnite |
The belemnite was, in essence, a squid with a conical shell. |
Florida |
Agatized Coral |
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Moonstone |
Agatized Coral |
Ironically, the moonstone, a form of the mineral feldspar, is not found naturally in Florida. It was named the state gem to honor the space program. |
Georgia |
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Staurolite |
Quartz |
Shark tooth |
Staurolite is abundant in north Georgia, the distinctively twinned, crystals are collected as good luck charms and also known as fairy stones. |
Hawaii |
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Black Coral |
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Idaho |
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Star garnet |
Equus simplicidens |
The star garnet from Emerald Creek, Idaho, is the best garnet outside of India to exhibit the star phenomenon. |
Illinois |
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Fluorite |
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Tullimonstrum gregarium |
Illinois is the largest producer of Fluorite in the United States. Fluorite is used in making steel, enamels, aluminum, glass, and many chemicals |
Indiana |
Salem Limestone |
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Iowa |
Geode |
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Geodes are found in limestone formations and have a hard outer shell. When carefully broken open, a sparkling lining of mineral crystals, most often quartz and calcite, is revealed.
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Kansas |
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Kentucky |
Kentucky Agate |
Coal |
Freshwater pearl |
Brachiopod |
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Louisiana |
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Agate |
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Petrified Palmwood |
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Maine |
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Tourmaline |
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Pertica quadrifaria |
Pertica quadrifaria (a plant fossil) was first discovered in Maine. Well-preserved remains of Pertica are found at only three other places in the world besides Maine. |
Maryland |
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Patuxent River Stone |
Ecphora gardnerae & Astrodon johnstoni
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The Patuxent River Stone is actually an agate, a cryptocrystalline form of quartz. Found only in Maryland, the Patuxent River Stone's colors of red and yellow reflect the Maryland State Flag |
Massachuetts |
Roxbury Pudding Stone & Granite |
Babingtonite |
Rhodonite |
Dinosaur foot track |
MA is one of the few locations in the world where Babingtonite, usually jet black material with a brilliant submetallic luste,r is found. |
Michigan |
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Chlorastrolite (Greenstone) |
Petoskey Stone (fossilized coral) |
Chlorastrolite ranges in color from yellow-green to almost black and when polished shows a turtleback pattern. |
Minnesota |
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Lake Superior agate |
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Despite their name, Lake Superior agates can be found throughout much of Minnesota |
Mississippi |
Petrified wood |
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Fossil whale |
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Missouri |
Mozarkite (chert) |
Galena |
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Crinoid Delocrinus missouriensis
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The crinoid (Delocrinus missouriensis) is a mineralization of an animal which, because of its plant-like appearance, was called the "sea lily." |
Montana |
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Sapphire & Montana Agate |
Duck-billed Dinosaur (Maiasaura peeblesorum) |
Yogo mines have produced an estimated forty million dollars in blue sapphires. |
Nebraska |
Prairie Agate |
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Blue Chalcedony |
Mammoth |
One mammoth found in Lincoln County, Archidiskodon imperator maibeni, was one of the world's largest elephant fossils. |
Nevada |
Sandstone |
Silver (metal) |
Black Fire Opal & Turquoise |
Ichthyosaur |
Northern Nevada’s Virgin Valley is the only place in North America where black fire opal is found in any significant quantity.
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New Hampshire |
Granite |
Beryl |
Smoky Quartz |
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New Jersey |
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Hadrosaurus foulkii |
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New Mexico |
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Turquoise |
Rioarribasaurus |
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New York |
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Garnet |
Sea Scorpian Eurypterus remipes
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Sea scorpions are extinct carnivorous marine arthropods. These fierce hunters had a scorpion-like stinger which may have contained poison, 3 pairs of jointed legs, 2 clawed arms, and strong jaws. |
North Carolina |
Granite |
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Emerald |
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A greater variety of minerals, more than 300, have been found in North Carolina than in any other state. |
North Dakota |
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Teredo petrified wood |
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Ohio |
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Flint |
Isotelus (trilobite) |
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Oklahoma |
Barite "rose" |
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Hourglass Selenite Crystal |
Saurophaganax maximus (Theropod dinosaur) |
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Oregon |
"Thunder egg" |
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Sunstone |
Metasequoia |
Oregon is also the only place in the world that this gem grade material is found with copper in it. |
Pennsylvania |
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Phacops rana |
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Rhode Island |
Cumberlandite |
Bowenite (antigorite) |
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South Carolina |
Blue granite |
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Amethyst |
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The curator of mineralogy for the Smithsonian Institute has graded one of the largest early specimens of Amethyst from this SC as the finest seen in this country. |
South Dakota |
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Rose Quartz |
Fairburn Agate |
Triceratops |
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Tennessee |
Limestone |
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Tennesseee Pearl |
Pterotrigonia thoracica
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Tennessee River pearls are of all colors and they are “natural” as the mussel made them – all pearl, all the way through. They have been found in various shapes – spherical, pear-shaped and baroque, or irregular. |
Texas |
Petrified Palm Wood |
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Blue Topaz |
Pleurocoelus |
Texas also has a state gemstone cut: The Lone Star cut. |
Utah |
Coal |
Copper |
Topaz |
Allosaurus |
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Vermont |
Marble, Slate, Granite |
Talc |
Grossular Garnet |
Delphinapterus leucas |
Grossular garnet from the Belvidere Mine at Eden Mills is thought to be the finest specimen of its kind anywhere. |
Virginia |
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Chesapecten jeffersonius |
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Washington |
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Petrified Wood Mammoth |
Columbian Mammoth (Mammuthus columbi) |
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West Virginia |
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Chalcedony Coral |
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Wisconsin |
Red Granite |
Galena |
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Trilobite (Calymene celebra) |
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Wyoming |
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Nephrite Jade |
knightia ( herring) & Triceratops |
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