sedimentary

Laterite

Laterite (Fe2O3 and Al2O3-rich residual rock)

AI-generated identification · may be incorrect

Mohs hardness varies from 3 to 7 depending on iron content, reddish-brown to yellowish-orange color, dull luster, earthy structure, high specific gravity.

Identified October 23, 2026More sedimentary →

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Physical properties

Mohs hardness varies from 3 to 7 depending on iron content, reddish-brown to yellowish-orange color, dull luster, earthy structure, high specific gravity.

Formation & geological history

Formed through intense and prolonged weathering of underlying parent rocks in tropical, wet climates with alternating wet and dry seasons.

Uses & applications

Used historically as building stone and is a primary ore for aluminum (bauxite-rich varieties) and iron.

Geological facts

Laterite hardens significantly upon exposure to air, which made ancient civilizations like the Khmers in Angkor use it extensively for temple construction.

Field identification & locations

Identified by its porous, vesicular texture, reddish-brown color, and heavy iron-rich weight. Commonly found in tropical regions worldwide, especially India, Southeast Asia, and Sub-Saharan Africa.