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Migrated shungite, which is bright (lustrous) shungite, has been interpreted to represent migrated hydrocarbons and is found as either layer shungite, layers or lenses near conformable with the host rock layering, or vein shungite, which is found as cross-cutting veins. Shungite may also occur as clasts within younger sedimentary rocks. [10]
The Zazhoginskoe field is one of the largest fields of shungite rocks in the world. [1] It is located on the outskirts of the village Tolvuya in Medvezhyegorsky District of Karelia, 1.7 km from the shore of Lake Onega, 5 km from a navigable bay. Shungite rocks were deposited around the northern part of Lake Onega and under the lake.
Fossils may be found either associated with a geological formation or at a single geographic site. Geological formations consist of rock that was deposited during a specific period of time. They usually extend for large areas, and sometimes there are different important sites in which the same formation is exposed.
Shungite can be low-carbon (5% C), medium-carbon (5-25% C) and high-carbon (25-80% C) percent by weight of carbon and the carbon base of shungite is a multilayered fullerene-like globule with a diameter of 10-30 nm. Graphene is Carbon in 2 dimensional form. It is monolayer carbon molecules in a flat, 2 dimensional sheet.
Bentonite production (tonnes) per country in 2006 Country (or area) Production World 14,600,000 United States 4,620,000 China * 3,200,000 Greece 1,100,000 India *
The Xiaozhai Tiankeng has been well known to local people since ancient times. Xiaozhai is the name of an abandoned village nearby and means "little village", and "Tiankeng" means Heavenly Pit, a unique regional name for sinkholes in China.
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Hranice Abyss. Hranice Abyss (Czech: Hranická propast) is the deepest flooded pit cave in the world. It is a karst sinkhole near the town of Hranice, Czech Republic.The greatest confirmed depth is 519.5 m (1,704 ft), of which 450 m (1,476 ft) is underwater.