Wollastonite: Stocks
Plenty in the ground, but almost none properly counted
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 (not estimated by USGS) | Current output t wollastonite (mine, 2025e) | Years of supply | Recycling |
|---|---|---|---|---|
| China | – | 600,000 | – | n/a |
| India | – | 120,000 | – | n/a |
| Mexico | – | 100,000 | – | n/a |
| Canada | – | 30,000 | – | n/a |
| Other countries | – | 11,000 | – | n/a |
Recycling
USGS reports no wollastonite recycling. USGS gives no reserve figures, only world resources above 100 Mt; US output is withheld. India's own data show 2.68 Mt of reserves (IBM, 1 April 2020), about 22 years at 2025 output.
No country has reliable reserve figures, so a reserve life cannot be computed. USGS puts world resources above 100 million t, more than 100 years of current output. Many identified deposits have never been surveyed well enough to count as reserves. Large deposits are known in China, Finland, India, Mexico and the United States. Wollastonite is dispersed into ceramics, plastics and coatings and cannot be recovered, so recycling is nil. There is no US government stockpile and no exchange inventory.
None.