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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 | Radioactive, Phosphate, Uranium | Britannica
autunite, phosphate mineral, hydrated calcium and uranium phosphate [Ca (UO 2) 2 (PO 4) 2 ·10–12H 2 O], that is an ore of uranium It forms translucent to transparent, yellow to pale-green crystals, scaly masses, or crusts in hydrothermal veins and pegmatites, where it occurs as an alteration product of uraninite
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 - 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 (Hydrated Calcium Uranyl Phosphate) - Amethyst Galleries
This autunite specimen consists of several intergrown books of thin rectangular crystals Most of the autunite is a bright yellow color with a tint of green, but other parts (primarily towards the centers of the crystals) are distinctly green (with a tint of yellow)
Autunite Mineral Data
Comments: Corner of a meta-autunite crystal showing the dehydration of autunite (dark green) to meta-autunite (lighter yellowish green) Location: Daybreak Mine, Spokane County, Washington, U S A
Autunite - Rock Identifier
Autunite is famous for have radioactive properties, although its radioactivity is very low in a non-agitated state It is still strongly discouraged to handle without proper protection, though! This mineral is rich in uranium, which is extracted to be used in nuclear reactors to create energy

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