Autunite (hydrated calcium uranyl phosphate), with formula Ca (UO 2) 2 (PO 4) 2 ·10–12H 2 O, is a yellow-greenish fluorescent phosphate mineral with a hardness of 2–. [4][5] Autunite crystallizes in the orthorhombic system and often occurs as tabular square crystals, commonly in small crusts or in fan-like masses.

Autunite Group. A secondary mineral resulting from the oxidation of primary uranium minerals in hydrothermal veins, granite pegmatites, etc. Dehydrates (reversibly) in air to meta-autunite.

钙铀云母是少见的表生铀矿物，含铀54.46%。四方晶系，晶体呈四方板状，集合体呈玫瑰状、苔藓状或皮壳状。外观为瓶绿至浅绿色透明固体，有玻璃光泽，相对密度3.7。在紫外线照射下发淡黄绿色中强荧光。

2023年4月23日 · Autunite is a phosphate mineral that formula is calcium uranium phosphate (Ca (UO2)2 (PO4)2·10–12H2O) and It is harness of 2 - 2, 5.

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.

Mineral Group: Autunite group. Occurrence: A secondary mineral derived from primary uranium-bearing minerals under oxidizing conditions, in hydrothermal veins, granite pegmatites, etc. Association: Meta-autunite, torbernite, phosphuranylite, sal ́eeite, …

Autunite, phosphate mineral, hydrated calcium and uranium phosphate [Ca (UO2)2 (PO4)2·10–12H2O], 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

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 is one of the more attractive and popular radioactive minerals. To state the obvious, the uranium in its chemical formula provides this radioactivity. Autunite is probably the most popular uranium mineral for collectors. Its green and yellow color …

Autunite is a mineral that can be defined as Ca (UO2)2 (PO4)2·10-12H2O, which is partially dehydrated and contains elements like calcium, uranium, phosphorus, and oxygen. AI generated definition based on: Handbook of Mineral Spectroscopy, 2020