Zeolites: Stocks
Why nobody can say how much the world holds
What this tab covers How much is left and how much is held. For minerals and energy: reserves, current output, years of supply and recycling for the top five countries. For farm commodities: production, ending stocks and stocks-to-use for the top five producers (USDA, October 2026). It also covers inventories and stockpiles.Top five countries: reserves, output and years of supply
| Country | Reserves t (world reserves not estimated by USGS) | Current output t natural zeolites (mine, 2025e) | Years of supply | Recycling |
|---|---|---|---|---|
| Slovakia | – | 280,000 | – | n/a |
| Georgia | – | 240,000 | – | n/a |
| Korea, Republic of | – | 160,000 | – | n/a |
| China | – | 150,000 | – | n/a |
| Russia | – | 130,000 | – | n/a |
Recycling
USGS says zeolites used for desiccation, gas absorption, wastewater treatment and water purification can be reused after reprocessing, but no quantity is published. World reserves are not estimated; two leading US companies reported combined reserves of 80 Mt in 2022 against US output of 80,000 t in 2025 (USGS). Indonesia (120,000 t) and the US (80,000 t) follow the top five.
World reserves have not been estimated, so no reserve life can be calculated. Companies rarely publish reserves, and much reported output is altered tuff valued as rock rather than for its zeolite content. Two leading US companies reported combined reserves of 80 million t in 2022, about 1,000 years of current US output. USGS judges US chabazite and clinoptilolite resources sufficient for foreseeable demand. Zeolites used as desiccants, gas absorbents and water filters can be regenerated and reused, but recycled volumes are not reported.
Zeolites used for desiccation, gas absorbance and water treatment may be reused after reprocessing; recycled quantities are unknown.