Material Insights · Understanding the Material World

Kyanite: Stocks

Only two countries report reserves. Who are they?

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

CountryReserves t (mineral; China as crude ore) Current output t (mine, 2025e; andalusite except US kyanite) Years of supplyRecycling
South Africa (andalusite)–120,000–n/a
United States (kyanite)–80,000–n/a
France (andalusite)–60,000–n/a
China (andalusite, crude ore)5,000,00050,000100n/a
Peru (andalusite)–40,000–n/a
USGS MCS 2026, Kyanite and Related Minerals (world mine production and reserves table). Years of supply = reserves ÷ current output; reserves grow as prices and technology change, so this is not a countdown.

Recycling

USGS rates recycling as insignificant but expects recycled refractory material to be used more often. US reserves are described only as large. India (kyanite and sillimanite) produced 2,500 t in 2025 against 9.1 Mt of reserves, over 3,600 years. No world total is calculated because countries report different minerals on different bases (USGS 2026).

Reserves are reported only for India (9.1 million t) and China (5 million t), and US reserves are described as large. No world total or reserve life can be computed. Large uneconomic resources lie in Appalachian and Idaho schists and in California gneiss. Recycling is insignificant today. USGS suggests recycled refractory material may be used more often in future. There is no government stockpile.

Insignificant, though recycled refractory materials may be used more often in future.