Quenstedtite
A variety of Minerals
What is Quenstedtite?
Quenstedtite is an uncommon iron sulfate mineral with chemical formula Fe2(SO4)3·11H2O. It forms violet or white triclinic crystals. Found in oxidized zones of pyrite-rich orebodies, especially in arid climates. It was first reported in 1888 for an occurrence in Tierra Amarilla, Copiapó Province, Atacama Region, Chile and named by G. Linck in 1889 for the German mineralogist F. A. von Quenstedt (1809–1889).
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Quenstedtite 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.
Quenstedtite Localities Map
See where Quenstedtite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- White to very pale violet to red-violet; colorless to pale rose in transmitted light.
- Hardness (Mohs)
- 2.5
- Density
- 2.14 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Fe2(SO4)3 · 11H2O
- Elements
- Fe, H, O, S
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Quenstedtite FAQs
How do I identify Quenstedtite?
Quenstedtite can be identified by its hardness of 2.5 on the Mohs scale, White to very pale violet to red-violet; colorless to pale rose in transmitted light. color. Look for these key characteristics when examining specimens.
What color is Quenstedtite?
Quenstedtite typically appears in White to very pale violet to red-violet; colorless to pale rose in transmitted light.. Color can vary depending on impurities and formation conditions.
How hard is Quenstedtite?
Quenstedtite has a hardness of 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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