Autunite
Definition
A mineral from the phosphate class, hydrated uranium and calcium phosphate, with the chemical formula Ca(UO2)2(PO4)2·10-12H2O, featuring a brilliant greenish-yellow color; it is a highly radioactive mineral that fluoresces under ultraviolet light, historically discovered in the Autun region (France) and used as a secondary uranium ore.
Bilingual Equivalents
- Autunite
- Lime uranite
Grammatical & Source Details
| Inflection Type | Neuter noun, standard structural endings for plural and genitive cases. |
| Formation | Mineral name derived by suffixing the geographic type locality Autun with the standard industrial suffix '-ite'. |
| Spelling / Pronunciation | [ˈɔː.tə.naɪt] |
| Source | Dana's System of Mineralogy and Geological Nomenclature Standards |
Contextual Usage Examples
RO: Geologul a folosit un contor Geiger pentru a măsura radiațiile emise de eșantionul galben de autunit.
EN: The geologist used a Geiger counter to measure the radiation emitted by the yellow autunite specimen.
RO: Sub lumina ultravioletă, acest cristal de autunit emite o strălucire fluorescentă de un verde intens.
EN: Under ultraviolet light, this autunite crystal emits an intense green fluorescent glow.
RO: S-au găsit depozite secundare de autunit în zonele de oxidare ale zăcămintelor hidrotermale de uraninit.
EN: Secondary deposits of autunite were found in the oxidation zones of hydrothermal uraninite vein deposits.
Idioms & Phrases
Cristal de autunit / Autunite crystal
RO: Formațiune minerală tabulară sau micacee, casantă, compusă structural din straturi de uraniu și fosfor.
EN: A tabular or micaceous mineral formation, brittle, structurally composed of uranium and phosphorus layers.
Fluorescență de autunit / Autunite fluorescence
RO: Proprietate optică specifică prin care mineralul strălucește puternic în verde sub lămpi UV.
EN: A specific optical property whereby the mineral glows strongly in green under UV lamps.
Zăcământ de autunit / Autunite deposit
RO: Acumulare geologică secundară de fosfați de uraniu formată prin alterarea mineralelor primare în roci granitice.
EN: A secondary geological accumulation of uranium phosphates formed by the alteration of primary minerals in granitic rocks.
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