Torbernite identification and geology

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• Browse all mineral identification entries — Compare this entry with the complete GeoMiner minerals collection.
• Previous: Topaz — Aluminum silicate fluoride prized as a gemstone. Naturally colorless, yellow, or blue; pink topaz is usually heat-treated.
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• Autunite
• Malachite
• Dioptase

Sources, scope & corrections

These authoritative resources support category-level nomenclature, terminology, identification methods, and safety. When a specimen-specific safety warning appears, the public-health source listed here directly supports that precaution. They are not line-by-line citations for every other property on this entry, and natural specimens vary.

Editorial owner

GeoMiner

Last updated

2026-03-30T14:37:51.084183+00:00

Review status

Published; not independently peer-reviewed

• IMA–CNMNC List of Mineral Names — International Mineralogical Association. Official mineral-name, nomenclature, and classification records.
• Mineral ID Key — Mineralogical Society of America. Physical-property identification methods, repeat-testing guidance, and limitations.
• Technologically Enhanced Naturally Occurring Radioactive Materials from Uranium Mining — U.S. Environmental Protection Agency. Official radiation-safety guidance for mineral collectors, including uranium- and thorium-bearing specimens.

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Common questions

What is Torbernite?

Hydrated copper uranyl phosphate forming emerald-green tabular crystals. Radioactive uranium mineral.

How can you identify Torbernite?

Compare several properties rather than relying on colour alone. This entry records colour: Emerald green; lustre: Vitreous to pearly; streak: Pale green; Mohs hardness: 2-2.5; cleavage: Perfect basal; crystal system: Tetragonal; transparency: Transparent to translucent. Confirm an important identification with additional field tests or qualified laboratory work.

How does Torbernite form?

Forms in the oxidized zone of copper-uranium deposits by weathering of uraninite in copper-bearing rocks.

Where is Torbernite commonly found?

Democratic Republic of Congo, England, Portugal, USA; found in oxidized uranium deposits.

Is Torbernite safe to handle?

Minimize handling and time near this specimen. Keep it in a closed, clearly labelled container away from occupied areas; do not cut, grind, powder, streak, or carry it in a pocket. Seek local radiation-safety guidance for large specimens or collections. Avoid creating dust or using destructive tests on an unknown specimen, and follow site-specific safety procedures.

What is Torbernite commonly confused with?

Torbernite may be confused with Autunite, Malachite, Dioptase. Compare multiple diagnostic properties because colour and surface appearance can overlap.