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  2. Virgin Valley - Wikipedia

    en.wikipedia.org/wiki/Virgin_Valley

    The Opal mines are located in the Northern valley. [1] The Virgin Valley has mines that are rich in opals. The opals were discovered in about 1913. [2] The richest mines were owned by Flora Haines Loughead who had been a writer and a farmer but bought a string of claims after being sent to do a story for the San Francisco Chronicle. [3]

  3. Flora Haines Loughead - Wikipedia

    en.wikipedia.org/wiki/Flora_Haines_Loughead

    Her next career started in 1915 when she was sent to investigate the discovery of opals in Virgin Valley, Nevada, 400 miles (640 km) from San Francisco. She was reporting for the San Francisco Chronicle but she decided to buy 15 claims years after homesteading on Sagebrugh Creek at the Green Fire Mine (Sinkakis- Gemstones of North America). In ...

  4. Opal - Wikipedia

    en.wikipedia.org/wiki/Opal

    The largest producing mines of Virgin Valley have been the famous Rainbow Ridge, [41] Royal Peacock, [42] Bonanza, [43] Opal Queen, [44] and WRT Stonetree/Black Beauty [45] mines. The largest unpolished black opal in the Smithsonian Institution, known as the "Roebling opal", [ 46 ] came out of the tunneled portion of the Rainbow Ridge Mine in ...

  5. World's most expensive opal literally glows in the dark - AOL

    www.aol.com/news/2015-08-13-world-s-most...

    Meet the "Virgin Rainbow" – perhaps the finest and certainly the most expensive opal on record. It literally glows in the dark. In fact, as it gets darker around the opal, the opal appears ...

  6. Sheldon National Wildlife Refuge - Wikipedia

    en.wikipedia.org/wiki/Sheldon_National_Wildlife...

    Rockhounds search for precious opal, agates, petrified wood, carnelian, obsidian, rhyolite, jasper, hyalite opal, and psilomelane, among other semiprecious gemstones. The Virgin Valley Mining District is known for black opals , the Nevada State Gemstone, still very active with multiple fee-dig mines.

  7. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    Precious Gemstone: Virgin Valley black fire opal (1987) Semiprecious Gemstone: Nevada turquoise (1987) New Hampshire [48] Beryl (1985) Granite (1985); New Hampshire's nickname is the Granite State: Smoky quartz (1985) New Jersey [49] Franklinite [50] New Mexico [51] Turquoise (1967) New York [52] Garnet (1969) North Carolina [53] Gold (2011 ...

  8. Paleontology in Nevada - Wikipedia

    en.wikipedia.org/wiki/Paleontology_in_Nevada

    In 1908 more discoveries were made in the Virgin Valley area in beds being exploited for opal. There naturally occurring casts of twigs, limbs, and cracks of petrified wood were found. [1] In 1912 a slab of rock preserving fish, a primitive horse, mollusks, and plants, near Esmeralda Field. [12]

  9. List of mines in Oregon - Wikipedia

    en.wikipedia.org/wiki/List_of_mines_in_Oregon

    This list of mines in Oregon summarizes the mines listed by the Geographic Names Information System. As of January 7, 2014, there are 595 entries. ... Scotts Valley ...

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