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Slate is found in the Arctic and was used by Inuit to make the blades for ulus. China has vast slate deposits; in recent years its export of finished and unfinished slate has increased. Deposits of slate exist throughout Australia, with large reserves quarried in the Adelaide Hills in Willunga, Kanmantoo, and the Mid North at Mintaro and Spalding.
The Kate Brook Slate Formation (a.k.a. Tavy Formation) outcrops is of Frasnian to Famennian age and consists of greenish-grey and black slates representing an outer shelf facies. These rocks are found along the southwestern margin of the park from Tavistock southwards and on the southeastern margin south from Ashburton.
Slate mines are found around the world. 90% of Europe's natural slate used for roofing originates from the Slate Industry in Spain. [1] The major slate mining region in the United Kingdom is the Lake district, with Honister slate mine being the last working slate mine, the only producers of the world famous Westmorland greenslate.
The Kupferschiefer (German for Copper Shale, Copper Schist or Copper Slate) [1] [2] or Kupfermergel (Copper Marl), (T1 or Z1) [3] is an extensive and remarkable sedimentary unit in Central Europe.
Since 1999, slate imports from Spain, Portugal, Argentina and China caused the abandonment of local mining. Mining of Hunsrück slate was important for the discovery of fossils. Although not rare, fossils can only be found through extensive mining of slate. Many of the fine fossils exhibited in museums today were originally found by the slate ...
Conglomerate (/ k ən ˈ ɡ l ɒ m ər ɪ t /) is a sedimentary rock made up of rounded gravel-sized pieces of rock surrounded by finer-grained sediments (such as sand, silt, or clay). The larger fragments within conglomerate are called clasts, while the finer sediment surrounding the clasts is called the matrix.
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The Alum Shale Formation (also known as alum schist and alum slate) is a formation of black shale of Miaolingian (Middle Cambrian) to Tremadocian (Lower Ordovician) in age found predominantly in southern Scandinavia. [1] [2] It is shale or clay slate containing pyrite.