Torbernite
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Torbernite, also known as chalcolite, is a relatively common mineral with the chemical formula Cu2·12H2O. It is a radioactive, hydrated green copper uranyl phosphate, found in granites and other urani
Torbernite crystals from Mashamba West Mine, Kolwezi, Katanga Province, Democratic Republic of the Congo
Torbern Olof Bergman
Metatorbernite from Margabal Mine, Entraygues-sur-Truyère, France (Size: 4 cm × 3 cm × 1.8 cm)
A pyramidal torbernite crystal from Brest, France (Field of view: 7 mm × 5 mm)
Radioactive decay
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Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay
Torbernite
…Torbernite, also known as chalcolite, is a relatively common mineral with the chemical formula Cu[(UO2)(PO4)]2·12H2O. It is a radioactive, hydrated green copper uranyl phosphate, found in granites and other uranium-bearing deposits as a secondary mineral. The chemical formula of torbernite…
Pierre and Marie Curie in their Paris laboratory, before 1907
Taking an X-ray image with early Crookes tube apparatus in 1896. The Crookes tube is visible in the centre. The standing man is viewing his hand with a fluoroscope screen; this was a common way of setting up the tube. No precautions against radiation exposure are being taken; its hazards were not known at the time.