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The geologic history of these crystals began about 500 million years ago in a shallow sea which was receiving sediments from the ancient Adirondack Mountains to the north. . The calcium and magnesium carbonate sediments accumulated and lithified to form the dolomite bedrock currently known as the Little Falls Formation and formerly as the Little Falls Dolostone.
Researchers discovered a 500-year-old compass in a hidden chamber in Frombork, Poland, possibly used by Copernicus, shedding light on his astronomical work.
Researchers at McGill University found a rock with a very old model age for extraction from the mantle (3.8 to 4.28 billion years ago) in the Nuvvuagittuq greenstone belt on the coast of Hudson Bay, in northern Quebec; [2] the true age of these samples is still under debate, and they may actually be closer to 3.8 billion years old. [3]
The Cullinan Diamond is the largest gem-quality rough diamond ever found, [2] weighing 3,106 carats (621.20 g), discovered at the Premier No.2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the owner of the mine. In April 1905, it was put on sale in London, but despite considerable interest, it was still ...
A Construction Worker Accidentally Found a Secret Stash of 700-Year-Old Coins. Tim Newcomb. August 21, 2024 at 9:00 AM. Archaeologists Unearth 1,600 Ancient German Coins bee32 - Getty Images.
A Startling Discovery Found Mandibles in 500-Million-Year-Old Fossils. It Doesn't Make Sense. Darren Orf. July 30, 2024 at 10:00 AM
First known as the "Unnamed Brown", the Golden Jubilee Diamond was cut from a large brown diamond of 755.5 carats (151 g), found in the prolific blue ground of the Premier Mine in South Africa in 1985. Until 1990, the diamond remained largely unknown to the outside world, requiring two years' work to bring it to its current state.
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