Laterite
What is Laterite?
Laterite is a soil type rich in iron and aluminum, formed in hot and wet tropical areas. It results from intense and prolonged weathering of the underlying parent rock. The weathering process causes the leaching of silica and other soluble materials, leaving behind the less soluble iron and aluminum oxides. This gives laterite its characteristic reddish-brown color. Laterite is porous and can be easily cut, making it suitable for construction. However, it can also harden upon exposure to air, forming a durable material.
Optical Properties
- Refractive Index
- Not applicable, as Laterite is not a single mineral.
- Birefringence
- Not applicable, as Laterite is not a single mineral.
- Pleochroism
- Not applicable, as Laterite is not a single mineral.
- Optical Character
- Not applicable, as Laterite is not a single mineral.
- Dispersion
- Not applicable, as Laterite is not a single mineral.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Laterite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Laterite Localities Map
See where Laterite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- Red, reddish-brown, yellowish-brown, or mottled.
- Hardness (Mohs)
- 1-3
- Density
- 1.4 to 2.1 g/cm³
- Streak
- Red to reddish-brown
Chemical Properties
- Chemical Formula
- Typically represented as a hydrated iron and aluminum oxide: Fe2O3·nH2O and Al2O3·nH2O, with varying amounts of silica (SiO2) and other impurities.
- Elements
- Iron, Aluminum, Silicon, Oxygen, and Hydrogen
Also Known As
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Laterite FAQs
How do I identify Laterite?
Laterite can be identified by its hardness of 1-3 on the Mohs scale, Red color. Look for these key characteristics when examining specimens.
What color is Laterite?
Laterite typically appears in Red, reddish-brown, yellowish-brown, or mottled.. Color can vary depending on impurities and formation conditions.
How hard is Laterite?
Laterite has a hardness of 1-3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.