Torbernite
A variety of Autunite Group
What is Torbernite?
Upon glancing at torbernite, it looks like an innocent gemstone, but under further scrutiny, you will find it is riddled with uranium! This mineral is considered radioactive, so collecting these requires special handling and storage containers to avoid health-related issues. When not kept sealed, it can lose hydration and morph into different minerals.
Uses & Applications
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.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Torbernite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Torbernite Localities Map
See where Torbernite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Characteristics of Torbernite
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.
Health & Safety Information
- ⚠️Torbernite is toxic due to its Radioactivity.
- ⚠️Torbernite contains radioactive uranium. Radioactivity should be assessed using a Geiger counter before handling. Inhalation of the dust, or keep them by your side for a long time will be hazardous. Keep them in a closed box and in an well-ventilated place. Wash your hand after handling them.
- ⚠️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.
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Quick Facts
Physical Properties
- Color
- Emerald-green, grass-green. leek green, siskin green, apple green
- Hardness (Mohs)
- 2 - 2.5
- Density
- 3.22 g/cm³
- Streak
- Pale green
- Luster
- Pearly, Vitreous, Waxy, Sub-adamantine
- Crystal System
- Tetragonal
Chemical Properties
- Chemical Formula
- Cu(UO2)2(PO4)2 · 12H2O
- Elements
- Cu, H, O, P, U
Also Known As
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Torbernite FAQs
How do I identify Torbernite?
Torbernite can be identified by its hardness of 2 - 2.5 on the Mohs scale, Emerald-green color, Pearly, Vitreous, Waxy, Sub-adamantine luster, Tetragonal crystal system. Look for these key characteristics when examining specimens.
What color is Torbernite?
Torbernite typically appears in Emerald-green, grass-green. leek green, siskin green, apple green. Color can vary depending on impurities and formation conditions.
How hard is Torbernite?
Torbernite has a hardness of 2 - 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the characteristics of torbernite of Torbernite?
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.
