Tammany ParishĪ former official state mineral (from 1976 to 2011), the agate, is found in Louisiana gravels and limestone deposits, within the Citronelle Formation, and the younger sediments in the Feliciana Parishes. The Crassostrea virginica mollusk is easy to find, even in large numbers, off the coast of Louisiana, in the coastal belt. Louisiana adopted the cut and polished oyster shell in the cabochon cut form as the official gemstone in 2011. The fossilized palm is available in many locations in the region where the Catahoula formation consisting of sandstone, siltstone, and mudstone exists.Īlong the coast of Louisiana, the state gemstone – mineral – the oyster shell is also commonly found. Petrified palm wood is usually found in the parishes located in the northern areas of Louisiana as the Gulf of Mexico is theorized to have been situated in the Oligocene period much more north than today. Most specimens here are a palm of the genus Palmoxylon, which became the state fossil in 1976. This event occurred millions of years ago, as the coastline of that time was 100 miles farther inland than today. If you want to find the most famous Louisiana gem material, the Louisiana palm wood, or simply petrified palm wood, which formed during the Oligocene age in the Catahoula Formation, you have to go to the coast of Louisiana, since this material was deposited on the alluvial plains, in the coastal swamps of the Oligocene Gulf Coast. Louisiana, though not the richest state in minerals, is abundant in fossils, chert, agate, and petrified wood, and it has its unique palm wood, cabochons, opal (Louisiana Opal), opalized palm, or the famous agatized corals. Best Places for Rockhounding in the State of Louisiana If you are interested in checking out the best rockhounding equipment and tools you can find them by clicking here (Amazon link). Read on to find out where to find these items and other rare materials. Petrified Palm Wood is the official state fossil of Louisiana, while the cut and polished oyster shell in the cabochon cut form is the official gemstone. Tammany Parish, north of Convington, and in the Clinton area of East Feliciana Parish. The state mineral of Louisiana is the agate, and it is commonly found in the gravels and the limestone deposits in the southeastern parts of Louisiana, in the area eastwards from the Mississippi River towards the Amite River valley in St. You can also find chert, different types of fossils, gemstones, opal, sedimentary rocks, and more. The southern, northern, and along the coastal line of Louisiana, are among the best places to rockhound, especially for agate, petrified palm wood, oyster shells, and agatized corals respectively. ![]() ![]() So where to rockhound in Louisiana and what you can find? Though the surface geology is dominated by sedimentary rocks, other objects might catch your attention. ![]() ![]() Louisiana is a good place for rockhounding since it is abundant in certain gemstones, minerals, and fossils. The state of Louisiana is famous for its oil, gas, as well as its salt domes. As an Amazon Associate, I earn from qualifying purchases with no additional costs for you.
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