Hollandite
A variety of Minerals
What is Hollandite?
Hollandite (chemical formula: Ba(Mn6Mn2)O16) is an oxide mineral. It is the barium-manganese (III) endmember of the coronadite group. A mineral, with the chemical composition BaMn6Fe2O16, that was first found in the Kajlidongri mine in the Jhabua district of Madhya Pradesh, India, had the name hollandite until it was reclassified as ferrihollandite by the International Mineralogical Association in 2012. Ferrihollandite is the barium-iron (III) endmember of the coronadite group. Rare quartz inclusion
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Hollandite 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.
Hollandite Localities Map
See where Hollandite 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
- Silvery-grey to greyish black, black
- Hardness (Mohs)
- 4 - 6
- Density
- 4.93 g/cm³
- Streak
- Black
Chemical Properties
- Chemical Formula
- Ba(Mn4+6Mn3+2)O16 Formerly defined as Ba(Mn4+,Mn2+)8O16.
- Elements
- Ba, Mn, O
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Hollandite FAQs
How do I identify Hollandite?
Hollandite can be identified by its hardness of 4 - 6 on the Mohs scale, Silvery-grey to greyish black color. Look for these key characteristics when examining specimens.
What color is Hollandite?
Hollandite typically appears in Silvery-grey to greyish black, black. Color can vary depending on impurities and formation conditions.
How hard is Hollandite?
Hollandite has a hardness of 4 - 6 on the Mohs scale. This gives it moderate hardness.
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