Natrojarosite
A variety of Minerals
What is Natrojarosite?
Jarosite is a basic hydrous sulfate of potassium and ferric iron (Fe-III) with a chemical formula of KFe3(SO4)2(OH)6. This sulfate mineral is formed in ore deposits by the oxidation of iron sulfides. Jarosite is often produced as a byproduct during the purification and refining of zinc and is also commonly associated with acid mine drainage and acid sulfate soil environments.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Natrojarosite 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.
Natrojarosite Localities Map
See where Natrojarosite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Characteristics of Natrojarosite
Jarosite has a trigonal crystal structure and is brittle, with basal cleavage, a hardness of 2.5-3.5, and a specific gravity of 3.15-3.26. It is translucent to opaque with a vitreous to dull luster, and is colored dark yellow to yellowish-brown. It can sometimes be confused with limonite or goethite with which it commonly occurs in the gossan (oxidized cap over an ore body). Jarosite is an iron analogue of the potassium aluminium sulfate, alunite.
Quick Facts
Physical Properties
- Color
- Yellow, golden brown, red-brown
- Hardness (Mohs)
- 2.5 - 3.5
- Density
- 3.29 g/cm³
Chemical Properties
- Chemical Formula
- NaFe3(SO4)2(OH)6
- Elements
- Fe, H, Na, O, S
Also Known As
Identify Natrojarosite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Natrojarosite FAQs
How do I identify Natrojarosite?
Natrojarosite can be identified by its hardness of 2.5 - 3.5 on the Mohs scale, Yellow color. Look for these key characteristics when examining specimens.
What color is Natrojarosite?
Natrojarosite typically appears in Yellow, golden brown, red-brown. Color can vary depending on impurities and formation conditions.
How hard is Natrojarosite?
Natrojarosite has a hardness of 2.5 - 3.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the characteristics of natrojarosite of Natrojarosite?
Jarosite has a trigonal crystal structure and is brittle, with basal cleavage, a hardness of 2.5-3.5, and a specific gravity of 3.15-3.26. It is translucent to opaque with a vitreous to dull luster, and is colored dark yellow to yellowish-brown. It can sometimes be confused with limonite or goethite with which it commonly occurs in the gossan (oxidized cap over an ore body). Jarosite is an iron analogue of the potassium aluminium sulfate, alunite.
%252FAbenakiite-(ce)-01.jpg&size=small)
