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The island of South Georgia is unusual among oceanic islands for having pre-Cretaceous sedimentary rocks underlying much of the island and a significant portion of felsic igneous rocks. Two-thirds of the island consists of intensely folded flysch , capped with Aptian age fossils, tuff and greywacke in the Cumberland Bay Series.
Moonstone cabochon. The most common moonstone is of the orthoclase feldspar mineral adularia, named for an early mining site near Mt. Adular in Switzerland, now the town of St. Gotthard. [1] [better source needed] A solid solution of the plagioclase feldspar oligoclase +/− the potassium feldspar orthoclase also produces moonstone specimens.
Wassaw Island is one of the Sea Islands.It is located on the Atlantic Ocean off the coast of the U.S. state of Georgia and is within the borders of Chatham County.The island and its surrounding marshlands are part of the Wassaw National Wildlife Refuge, which has a total area of 10,053 acres (40.68 km 2) of marsh, mudflats, and tidal creeks, including approximately 7 miles (11 km) of ...
Moonstone, one of June's modern birthstones, can appear to be almost clear at times, but is "prized for its blue to white adularescence," according to the International Gem Society.
Stallings Island is an archeological site with a large shell midden, located in the Savannah River near Augusta, Georgia. The site is the namesake for the Stallings culture of the Late Archaic period and for Stallings fiber-tempered pottery, the oldest known pottery in North America. The site was declared a National Historic Landmark in 1961.
Georgiaite found in Dodge County, GA displaying olive green color.. Georgiaite is a rare form of tektite found only in the state of Georgia in the southeastern United States. . These tektites are found in part of the North American strewn field coming from what is believed to be the Chesapeake Bay impact crater in the late Eocene epoch over 35 million years
What many don’t know is the connection of Georgia's barrier islands to the nearby mainlands and the Gullah Geechee communities who live there.
The stone found in an old mine was called “belomorite” — because, as Fersman explains, “The White Sea shimmered with the colors of moonstone... or did the stone reflect the pale blue depths of the White Sea?..” — Geologists took several samples to the Peterhof lapidary factory , recommending it as a new jewelry stone. [3]