Torbernite

Torbernite contains radioactive uranium. It is recommended to use a Geiger counter to measure radiation levels before handling. Wear gloves and a mask to prevent skin and lung exposure to radioactive dust. Wash your hands and clothes after handling it. Store it in a closed box in a well-ventilated area away from people.

The most obvious factor in identifying torbernite is its radioactivity. However, since it is frequently found in association with other radioactive minerals, this may not be useful in separating one uranium mineral from the rest. A next step would be to check color. Most uranium-bearing minerals are bright yellow or green. As torbernite is exclusively green, this can be a useful secondary fact. Crystal habit is also useful, but as it shares a similar structure and color with autunite. Nonetheless, regardless of identification, it is likely that at least some of the specimen will have already altered to meta-torbernite.

Torbernite is a valuable ore of uranium and is often an indicator of uranium deposits. However, it is primarily used in mineral collections. Use caution when handling specimens of torbernite or using it in any application, as it is radioactive.