Zanazziite
A variety of Roscherite Group
What is Zanazziite?
Zanazziite is a complex hydrated phosphate mineral from the roscherite group. It is a magnesium beryllium phosphate mineral. Zanazziite arises as barrel-shaped crystals and can reach up to 4 mm. It grows alongside quartz minerals. It is found in the crevices of Lavra da Ilha pegmatite, near Taquaral, in northeastern Minas Gerais, Brazil. Zanazziite is named after Pier F. Zanazzi. Zanazziite has an ideal chemical formula of Ca2Mg5Be4(PO4)6(OH)4·6H2O.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Zanazziite 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.
Zanazziite Localities Map
See where Zanazziite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Pale to dark olive-green
- Hardness (Mohs)
- 5
- Density
- 2.77 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Ca2Mg5Be4(PO4)6(OH)4 · 6H2O The formula given above is the idealised formula. The type description and Mandarino (1997) writes the formula as Ca2(Mg,Fe3+)(Mg,Fe2+, Al)Be4Mg5(PO4)6(OH)4.6H2O
- Elements
- Be, Ca, H, Mg, O, P
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Zanazziite FAQs
How do I identify Zanazziite?
Zanazziite can be identified by its hardness of 5 on the Mohs scale, Pale to dark olive-green color. Look for these key characteristics when examining specimens.
What color is Zanazziite?
Zanazziite typically appears in Pale to dark olive-green. Color can vary depending on impurities and formation conditions.
How hard is Zanazziite?
Zanazziite has a hardness of 5 on the Mohs scale. This gives it moderate hardness.