Nioboholtite
A variety of Minerals
What is Nioboholtite?
Nioboholtite is an extremely rare mineral with the formula (Nb0.6[]0.4)Al6BSi3O18. It is niobium-rich member of dumortierite supergroup, and niobium-analogue of holtite of the holtite group. It is one of three quite recently found minerals of this group, the other two being titanoholtite and szklaryite, all coming from the Szklary village near Ząbkowice Śląskie in Poland. They occur in a unique pegmatite. Nioboholtite and schiavinatoite are both minerals with essential niobium and boron.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Nioboholtite 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.
Nioboholtite Localities Map
See where Nioboholtite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Creamy-white to brownish-yellow or gray-yellow
- Density
- 3.72 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- (Nb0.6◻0.4)Al6BSi3O18
- Elements
- Al, B, Nb, O, Si
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Nioboholtite FAQs
How do I identify Nioboholtite?
Nioboholtite can be identified by its Creamy-white to brownish-yellow or gray-yellow color. Look for these key characteristics when examining specimens.
What color is Nioboholtite?
Nioboholtite typically appears in Creamy-white to brownish-yellow or gray-yellow. Color can vary depending on impurities and formation conditions.
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