Barite

Overview

Barite (also spelled baryte) is barium sulfate, BaSO₄, and the most common barium mineral. It is soft, with a Mohs hardness of 3 to 3.5, but unusually heavy for a nonmetallic mineral, with a measured density of about 4.5 g/cm³.¹

That density matters most. Combined with low abrasion, chemical inertness, low solubility and nontoxicity, it makes ground barite the standard weighting agent in the fluids used to drill oil and gas wells.²

Barite is on the US 2025 List of Critical Minerals and on the EU list of critical raw materials.³⁴ The EU's 2023 criticality assessment named China as both the largest global supplier (44%) and the main source of EU supply (45%).⁵

Where it comes from

Barite forms in low-temperature hydrothermal veins and in residual deposits left by weathered barite-bearing limestones. It also occurs in carbonatites and in submarine volcanogenic massive sulfide deposits.¹ Unlike many critical minerals, it is mined in its own right rather than as a by-product.³

World mine production was an estimated 8.7 million t in 2025, excluding the United States, where three companies mined barite at four operations in Nevada but output is withheld. India was the largest producer at about 3.0 million t, followed by China at 2.2 million t and Morocco at 1.0 million t.⁶

• India3,000,000 t · 34%
• China2,200,000 t · 25%
• Morocco1,000,000 t · 11%
• Kazakhstan700,000 t · 8%
• Iran300,000 t · 3%
• Mexico300,000 t · 3%
• Other countries1,200,000 t · 14%

World total excludes the United States, where production data are withheld. Other countries includes Laos, Turkey, Russia and Pakistan. Source: Mineral Commodity Summaries 2026: Barite

Chinese supply has been constrained since 2018 by environmental policies and mine consolidation, which reportedly closed about 80% of the country's smaller barite mines. The restrictions reduced exports of drilling-grade barite more than exports of industrial grades.²

USGS counts only reserve estimates developed since the American Petroleum Institute (API) adopted its 4.1-specific-gravity standard. On that basis China (120 million t), Iran (100 million t), Kazakhstan (85 million t) and India (51 million t) hold the largest reported reserves; no world total is available. World resources in all categories are about 2 billion t, of which about 740 million t are identified.⁶

What it is used for

More than 90% of barite sold in the United States, and roughly 70% of global consumption, goes into oil and gas drilling fluids.²⁶ These "muds" control formation pressure, cool and lubricate the drill bit, keep the wellbore stable and carry cuttings to the surface. Deeper wells need heavier muds and so more barite. Barite also does not interfere with magnetic measurements taken in the borehole.²

Demand therefore follows drilling activity, but not exactly. Barite use per rig has been rising as wells get deeper. Through October 2025 the average rig count was lower than a year earlier both in the United States and in the rest of the world, yet barite sales were estimated to have increased.⁶

Outside drilling, barite is used as a filler, extender or weighting agent in paints, plastics and rubber; in brake and clutch pads and automotive primer; in the concrete jackets of underwater pipelines; and in mold-release compounds for metal casting. Because it blocks X-rays and gamma rays, it is used in high-density concrete for radiation shielding, and ultrapure barite serves as a contrast medium for X-ray and CT examinations of the gastrointestinal tract.⁶

Grades and forms

Drilling-grade barite is specified mainly by specific gravity and particle size. In response to dwindling reserves of 4.2-specific-gravity barite, the API issued an alternate specification for 4.1-specific-gravity weighting agents in 2010.⁶ India's leading producer, for example, offers A-grade (minimum 4.2), B-grade (minimum 4.1) and lower grades that typically exceed 3.9.²

Trade and policy

The United States has historically been the world's leading barite importer; in 2022 its imports were more than double those of Saudi Arabia, the second-largest importer.² US net import reliance has exceeded 75% every year since 2021. Its main sources in 2021–24 were India (39%), China (21%), Morocco (19%) and Mexico (14%).⁶

Geography shapes this trade. Nevada barite is mostly ground locally and sold to drillers in the central and western United States, while operations in other regions rely on imports because ocean freight costs less than rail or truck transport.⁶ Imported crude barite is ground at mills along the Gulf of Mexico coast, and in 2022 crude barite made up 86% of general imports.² Ground barite enters the United States duty-free under normal trade relations.⁶

Environmental rules also affect which barite can be used. US regulations allow offshore discharges of drilling waste containing barite only if the barite contains less than 3 ppm cadmium and less than 1 ppm mercury, which matters for barite from base-metal deposits.²

New supply is being developed in Central Asia: in 2025 a company announced plans to start mining barite in Kazakhstan's Qaraghandy Province.⁶

This section is factual background, not legal or trade-compliance advice.

Recycling and substitution

Barite is not recycled.⁶

There are no large-scale alternatives to barite in drilling fluids. Calcium carbonate, hematite, ilmenite and manganese tetroxide are used in specific circumstances, and the technical literature also mentions celestite, iron carbonate and strontium carbonate, though these are not thought to be widely used.⁶ The alternatives are often more expensive, so they are generally reserved for special applications.²

Sources

1. Handbook of Mineralogy: Barite. Mineralogical Society of America, accessed 2026-10-03. ↩ ↩²

2. 2022 Minerals Yearbook: Barite (advance release). U.S. Geological Survey, accessed 2026-10-03. ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹

3. Final 2025 List of Critical Minerals. Federal Register, accessed 2026-10-03. ↩ ↩²

4. Regulation (EU) 2024/1252 (Critical Raw Materials Act). EUR-Lex, accessed 2026-10-03. ↩

5. Study on the Critical Raw Materials for the EU 2023 – Final Report. European Commission, DG GROW, accessed 2026-10-03. ↩

6. Mineral Commodity Summaries 2026: Barite. U.S. Geological Survey, accessed 2026-10-03. ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹²