Product

Chabazite is a natural zeolite mineral that forms an important but more specialized aluminosilicate ore, mainly valued for high‑selectivity gas separation, ion‑exchange, and environmental remediation applications.

Identity and composition

• Mineral type: Zeolite group, chabazite series; tectosilicate aluminosilicate with a small‑pore CHA framework.

• Representative formula: Often given as (Ca,Na₂)Al₂Si₄O₁₂ ⋅ 6H₂O for chabazite‑Ca, with other series members dominated by Na, K, or Sr.

• Key physical traits: Rhombohedral/pseudocubic crystals, Mohs hardness 4–5, density about 2.05–2.2 g/cm³, high cation‑exchange capacity and strong affinity for certain cations (NH₄⁺, heavy metals, radionuclides).

Geological occurrence and ore deposits

• Occurs mainly in vesicles and cavities of basaltic and andesitic volcanic rocks, more rarely in limestones and metamorphic rocks.

• Several deposits have been exploited industrially; a key example is the Bowie, Arizona (USA) Na‑chabazite ore body, used at scale for environmental and gas‑separation applications.

Main industrial applications

• Gas separation and drying: Used as a molecular sieve for removal of CO₂ from methane (e.g. landfill gas upgrading), sour‑gas treatment, and natural‑gas drying; Li‑exchanged chabazite is a patented adsorbent for gas separation.

• Environmental remediation: Applied to remove heavy metals (As, Tl, Hg) and radioactive isotopes from industrial and nuclear effluents; Bowie chabazite has been used in high‑profile nuclear‑site clean‑ups (e.g. Three Mile Island, Fukushima‑related work).

• Odour and emission control: Used in industrial odour control, flue‑gas treatment for mercury and other pollutants, and in some personal‑hygiene and air‑filtration products.

• Construction and specialty materials: Investigated and used as a pozzolanic additive in cementitious products and as an adsorptive filler in specialty formulations.

Commercial positioning vs. clinoptilolite

• Compared with clinoptilolite, chabazite ore volumes are smaller but targeted to higher‑value, higher‑spec uses where its small pore size and selectivity (e.g. for CO₂, NH₄⁺, certain metals) give performance advantages.

• Industrial producers market chabazite ore and concentrates specifically for environmental remediation, gas purification, and specialty catalysis, rather than broad agricultural or bulk‑adsorbent markets.