Geology lesson of the day! Why are there 96,000,000 green gemstones on this beach? The Green Sand Beach of the Big Island of Hawaii.
The green Gemstone is Olivine aka Peridot. Peridot is formed deep in the mantle of the earth and is brought to the surface through volcanic action. It is either deposited in cooled magma below the surface and eroded out, or in this case blown out onto the surface in an explosive Volcanic event that created a lot of volcanic ash or finer ejected material. And then washed out of the ash/cinder onto the beach.
Two expert sources had conflicting information on the source of the ash/cinder, one said a very large eruption from the main Moa Loa volcano, and the other, which is more likely, says it was a side vent of Mona Loa known as a cinder cone that had many small eruptions. Either way the peridot was deposited in volcanic ash/cinder in big bluffs that the ocean then eroded and concentrated the olivine onto this beach.
Green sand beach is officially known as Papakōlea.

Note If you visit this beach you must leave all the sand for other to enjoy. Take pictures, take video, take memories, but do not take sand!

If you want some peridot for yourself, I sell peridot bags and crystals on my website from my local claims.

Link to main vid:    • Why Are There 96,000,000 Green Gem St...  

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This video is produced by Dan Hurd, Prospector, Miner, Teacher and YouTuber, as part of his YouTube channel based on educational videos about gold mining, gold panning, prospecting, rock hounding, and mineral collecting.
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