About UThDEPO: Uranium and Thorium Deposits and Occurrences
The UThDEPO database includes global information on uranium and thorium deposits and occurrences. It is based on IAEA technical reports, meetings and publicly available data.
A web application was developed and made available to the public in 2004 as the geological UDEPO (Uranium DEPOsit) database. In 2024, the ThDEPO (Thorium DEPOsit) database was subsequently combined with UDEPO. In 2026, the combined database was renamed UThDEPO to reflect that the entries in the database represent not only deposits but also occurrences of uranium and thorium, with no commercial or economic implications for extraction.
If multiple resource estimates are known, only the largest estimate-generally the one with the lowest cutoff grade-is included.These resource estimations may conform to contemporary reporting standards, or they may be historical or, in uncommon cases, based on an IAEA estimate.
A web application was developed and made available to the public in 2004 as the geological UDEPO (Uranium DEPOsit) database. In 2024, the ThDEPO (Thorium DEPOsit) database was subsequently combined with UDEPO. In 2026, the combined database was renamed UThDEPO to reflect that the entries in the database represent not only deposits but also occurrences of uranium and thorium, with no commercial or economic implications for extraction.
If multiple resource estimates are known, only the largest estimate-generally the one with the lowest cutoff grade-is included. These resource estimations may conform to contemporary reporting standards, or they may be historical or, in uncommon cases, based on an IAEA estimate. This is particularly relevant for unconventional or co- or by-product resources.
In some instances, only production data was available, and this has been used as a minimum resource estimate. All data has been obtained from public sources, and locations are approximate.
The map of "World Distribution of Uranium Deposits" shows a snapshot of data from early 2017. The uranium deposit classification scheme used in UDEPO is explained in detail in "Geological Classification of Uranium Deposits and Description of Selected Examples". "World Distribution of Uranium Deposits (UDEPO) 2016 Edition" explains the geological aspects of the database.
