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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.
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. name type
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 ...
It serves as the base for the state's opal mine and is called the "Opal Capital of America": [5] the mine proper is located 5–6 miles outside of town. The population was 37 at the 2010 census . Geography
An estimated $200,000 worth of silver was mined from the above listed most productive mines around 1890, excluding the Peacock Mine. After the district wide shut down of all the mines, the Arlington Mine was reopened for a brief two years, from 1937–1939, in which made profits of $71,683. The Fourth Of July Mine was also reopened, from 1958-1964.
Coober Pedy (/ ˈ k uː b ər ˈ p iː d i /) is a town in northern South Australia, 846 km (526 mi) north of Adelaide on the Stuart Highway.The town is sometimes referred to as the "opal capital of the world" because of the quantity of precious opals that are mined there.
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