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autunite

钙铀云母

The Collaborative International Dictionary of English v.0.48 (gcide)

Autunite \Au"tun*ite\, n. [From Autun, France, its locality.]
(Min.)
A lemon-yellow phosphate of uranium and calcium occurring in
tabular crystals with basal cleavage, and in micalike scales.
H., 2-2.5. Sp. gr., 3.05-3.19.
[Webster 1913 Suppl.]

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Autunite - Wikipedia
Autunite was discovered in 1852 near Autun, France, which is also autunite's namesake It occurs as an oxidation product of uranium minerals in granite pegmatites and hydrothermal deposits
Autunite: Mineral information, data and localities.
Autunite is fragile and may easily split with low pressure On cutting, the mineral may appear sectile, waxy, or slightly elastic
Autunite | Physical - Optical Properties, Occurrence, Uses More
Autunite crystallizes in the orthorhombic system and often occurs as tabular square crystals, commonly in small crusts or in fan-like masses Due to the moderate uranium content of 48 27% it is radioactive and also used as uranium ore Coarse groups are found, but scaly coatings are more common
Autunite: Properties, Occurrence, Uses - Geology In
Autunite is a vibrant, uranium-rich mineral that glows under UV light and serves as a key uranium ore Formed through weathering in uranium deposits, it is found worldwide in places like France, Portugal, and the USA
Autunite | Radioactive, Phosphate, Uranium | Britannica
Some important uranium minerals are pitchblende (impure U 3 O 8), uraninite (UO 2), carnotite (a potassium uranium vanadate), autunite (a calcium uranium phosphate), and torbernite (a copper uranium phosphate)
Autunite - Gems Minerals
Autunite is a distinctive uranium-bearing phosphate mineral known for its fluorescent yellow-green color, strong radioactivity, and unique crystalline structure
Autunite - an overview | ScienceDirect Topics
Autunite is defined as a hydrated calcium uranyl phosphate mineral with the chemical formula Ca (UO₂)₂ (PO₄)₂·10-12H₂O It is characterized by its composition involving calcium, uranium, and phosphate, and is known to partially dehydrate
Autunite - Minerals Education Coalition
Autunite is a radioactive orthorhombic mineral which results from the hydrothermal alteration of uranium minerals Used as a uranium ore, it was first discovered in France in 1852
Autunite Mineral Data
Weight of pure Autunite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3 22 gm cc * Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Autunite - scientificlib. com
Autunite crystallizes in the tetragonal system and often occurs as tabular square crystals Due to the moderate uranium content of 48 27% it is radioactive and also used as uranium ore

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