Kaolin (also known as china clay) is a fine white clay formed by the chemical weathering of aluminous minerals, primarily feldspar. Global proven kaolin resources are estimated at approximately 20.9 billion tonnes. Below is a breakdown of the major producing regions:

1. China — The World's Largest Producer

China ranks third globally in proven kaolin reserves, with approximately 2.1–2.9 billion tonnes across 267 identified deposits. Production is concentrated in six provinces that together account for 84.55% of the national total:

• Guangdong, Guangxi, Fujian — Weathered-type kaolin, dominant in South China. Formed from granite and quartz porphyry under tropical weathering. Fujian's Fuzhou area is a notable deposit zone.
• Shaanxi, Jiangxi, Jiangsu, Hunan — Additional major weathered-type deposits.
• Shanxi (Datong, Huairen, Shuozhou), Inner Mongolia (Jungar, Wuda), Anhui (Huaibei), Shaanxi (Hancheng) — Coal-bearing kaolin (kaolin rock). China holds the world's largest coal-bearing kaolin reserves (1.44 billion tonnes), with Inner Mongolia's Jungar coalfield being the single richest source.

Key cities/areas: Maoming, Suzhou, Zhanjiang, Beihai, Longyan.

2. United States — The "White Gold" Belt

The U.S. is one of the top global producers, known for high-brightness, fine-particle kaolin with excellent coating properties.

• Georgia — The core of U.S. kaolin production. A 13-county stretch along the Atlantic Seaboard fall line between Augusta and Macon is called the "White Gold Belt." Sandersville is famously known as the "Kaolin Capital of the World."
• South Carolina — Secondary production zone.
• Southeastern Pennsylvania — Historical deposits near Landenberg and Kaolin (the town is literally named after the mineral). These formed between 100–45 million years ago (late Cretaceous to early Paleogene).

3. Brazil — The Amazon Basin Giant

Brazil has become the major supplier of coating-grade kaolin to European markets, largely displacing Western European producers.

• Deposits are concentrated in the Amazon region.
• Characterized by high brightness and low impurity levels.
• Growing production capacity, though transportation infrastructure remains a challenge in some areas.

4. United Kingdom — Cornwall & Devon

UK kaolin production is confined to two granite-hosted areas:

• Cornwall — The western and central parts of the St Austell Granite. This is the primary source.
• Devon — The southwestern margin of the Dartmoor Granite.

UK output (~1.36 million dry tonnes in 2008, down from a peak of 2.78 million in 1988) is now solely filler-grade for the paper industry. The ceramics sector accounts for about 30% of sales.

5. Australia — New South Wales

Australia has widespread kaolin deposits, with current production concentrated in:

• Gulgong — Transported deposits associated with the Gulgong Granite.
• Oaklands–Coorabin area (near Deniliquin, southern NSW) — Large sedimentary deposits, the major source of high-grade white kaolin.
• Annual production ranges from 21,000 to 40,000 tonnes.

Other prospective areas: Glen Innes–Inverell–Emmaville, Goulburn–Marulan–Braidwood, Cooma–Adaminaby–Bombala.

Used mainly in ceramics, refractories, building materials (paint, building board, adhesives).

6. Europe (Western & Northern)

Kaolinite mantles are widespread across Western and Northern Europe, with ages ranging from Mesozoic to Early Cenozoic. Key markets include:

• Germany, Italy, Spain — Driven by ceramics and construction demand.
• Kaolin is essential for porcelain, sanitaryware, wall tiles, and electrical porcelain.

7. Other Notable Producing Countries

Regional Summary by Quality Tier

Premium coating-grade (paper & high-end ceramics): Georgia (USA), Amazon Basin (Brazil), Cornwall (UK), Inner Mongolia (China)

High-brightness filler-grade (paper, paint, plastics): Guangdong & Fujian (China), New South Wales (Australia)

Bulk filler / industrial-grade (rubber, cables, construction): Jiangxi, Hunan, Jiangsu (China), India, Russia

Coal-bearing kaolin rock (refractory & specialty): Shanxi, Inner Mongolia, Anhui, Shaanxi (China) — this is a resource type unique to China

Bottom line: Kaolin forms in hot, moist climates where aluminous rocks undergo intense chemical weathering — which is why the richest deposits cluster in tropical/subtropical zones (South China, Brazil, Southeast Asia) and ancient weathered landscapes (USA's fall line, Western Europe). China dominates by volume, Georgia (USA) and Brazil dominate by coating quality, and Cornwall (UK) remains the historic heart of European kaolin.

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