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The Koroit opal field is known for the very distinctive type of boulder opal that is found in its mines. In Queensland boulder opal is found within a 300 km wide belt of sedimentary rocks in the Winton Formation. Here opal is found as a kernel in small concretions. [1] The Koroit Opal field was discovered in 1897 by Lawrence Rostron.
Adavale was the location of Australia's first opal discovery. [9] The town of Yowah is built on an opal field which began producing opals in the 1870s. [24] Opals are also found at Koroit opal field, Quilpie, Eulo and in northern New South Wales. The geological formation containing opals in South West Queensland is called the Winton Formation. [25]
The Paroo Shire is bounded by the Open Mitchell Grass Flood Plains in the East to the Yowah opal fields where the Yowah nut is found and the Mulga lands to the West. [citation needed] Main industries within the Shire are beef, goat, fat lamb, wool, opal mining and tourism. Located in a semi-arid zone, the region has temperatures in summer ...
Other minerals mined in the state include copper, lead, silver, zinc, gold, phosphate rock, magnesite and silica sand. Gemstones such as sapphire, opal and chrysoprase are also mined in commercial quantities. Opal fields extend from the Koroit opal field in South West Queensland into New South Wales.
Koroit opal field; L. Lolworth Creek Battery; M. Mabel Mill; Mineralogy (mining company) Mining works on Towers Hill; Mount Moran Battery; Mount Mulligan mine ...
The Koroit police station was established on Commercial Road on 30 May 1867. The Koroit railway station began operations in 1889, with a brick building replacing an original timber structure in 1907. However, train services to Koroit ceased in September 1977 when the lines west from Dennington and north from Koroit were closed.
This category is for mines for cardinal gems other than Diamond, ie amethyst, emerald, ruby & sapphire, and also opal mines (see Gemstone). Subcategories This category has the following 3 subcategories, out of 3 total.
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