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Andamooka in South Australia is also a major producer of matrix opal, crystal opal, and black opal. Another Australian town, Lightning Ridge in New South Wales , is the main source of black opal, opal containing a predominantly dark background (dark gray to blue-black displaying the play of color), collected from the Griman Creek Formation . [ 31 ]
The opal is just under 5,000 carats; roughly equivalent in size to two cricket balls. [1] Although rough-cut, it is polished on two sides. [3]Due to the evaporation of an inland sea several million years ago, South Australia is one of the few places on Earth where opals of this size can be created.
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.
The Olympic Australis opal is the largest and most valuable opal yet found (as of 1961) [1] and was valued at A$2,500,000 in 1997. [2] It was found in 1956 at the 'Eight Mile' opal field near the town of Coober Pedy in South Australia. [3] The opal was found at a depth of 9.1 metres (30 ft).
In September 2011 the new name for the system was announced as 'Opal', chosen from a selection of 665 names. Transport for NSW said Opal was chosen because it was 'uniquely Australian', [13] short, and easy to say. As well as the opal being Australia's national gemstone, the black opal is the New South Wales gemstone symbol. [14]
The Open-pool Australian lightwater reactor (OPAL) is a 20 megawatt (MW) swimming pool nuclear research reactor.Officially opened in April 2007, it replaced the High Flux Australian Reactor as Australia's only nuclear reactor, and is located at the Australian Nuclear Science and Technology Organisation (ANSTO) Research Establishment in Lucas Heights, New South Wales, a suburb of Sydney.
Mintabie is an opal mining community in the Anangu Pitjantjatjara Yankunytjatjara (APY lands) in South Australia.It was unique in comparison to other communities situated in the APY Lands, in that its residents were largely not of Aboriginal Australian origin, and the land had been leased to the Government of South Australia for opal mining purposes since the 1980s.
The Yowah opal field in the Shire of Paroo. The Yowah nut is a type of precious opal, found within the Yowah opal fields situated in Yowah, Shire of Paroo, South West Queensland, Australia since the latter part of the 19th century. [1] These opals are known for their distinctive nut-like shape, opalescent patterns, and vibrant colours.
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