Tarapacaite
A variety of Minerals
What is Tarapacaite?
Tarapacáite is the mineral form of potassium chromate with the chemical formula K2CrO4. It forms bright yellow crystals and was discovered in 1878. It is named for the former Tarapacá Province, Peru; nowadays belonging to Chile. The boundaries between Peru, Bolivia and Chile were vague in the Atacama Desert before the War of the Pacific (1879–1883). Its type locality is Oficina Maria Elena, Maria Elena, Tocopilla Province, Antofagasta Region, Chile. It is unlikely to occur anywhere except in highly arid conditions as it is easily soluble in water.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Tarapacaite 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.
Tarapacaite Localities Map
See where Tarapacaite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Bright yellow, yellow-orange
- Density
- 2.735 g/cm³
Chemical Properties
- Chemical Formula
- K2(CrO4)
- Elements
- Cr, K, O
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Tarapacaite FAQs
How do I identify Tarapacaite?
Tarapacaite can be identified by its Bright yellow color. Look for these key characteristics when examining specimens.
What color is Tarapacaite?
Tarapacaite typically appears in Bright yellow, yellow-orange. Color can vary depending on impurities and formation conditions.
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