Lunar Meteorite (Feldspathic Breccia)

Physical Properties

Hardness: 6-7 (Mohs); Color: Dark gray to black matrix with white/tan clasts; Luster: Sub-vitreous to dull; Crystal structure: Microcrystalline groundmass with larger mineral fragments (clasts); Specific gravity: ~2.8-3.1.

Formation & Geological History

Formed on the Moon's surface as a result of repeated impact events that combined crushed rock and dust (regolith) into a solid form. These specimens reached Earth after being ejected from the Moon by a significant meteorite impact, eventually falling to Earth through the atmosphere.

Uses & Applications

Primary use is scientific research to understand the Moon's crustal history and composition. They are also highly valued by collectors and occasionally used in high-end specialty jewelry.

Geological Facts

Lunar meteorites are rarer than gold or diamonds on Earth. Until the first lunar meteorite was identified in Antarctica in 1982, the only moon rocks known to humans were those brought back by the Apollo missions.

Field Identification & Locations

Identify in the field by their fusion crust (if fresh), magnetic properties (usually low for lunar rocks), and characteristic 'brecciated' appearance of light-colored fragments in a dark matrix. Common locations include the Sahara Desert and Antarctica.

Identified on: 4/26/2026

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