Juansilvaite
A variety of Minerals
What is Juansilvaite?
Juansilvaite is a very rare, complex arsenate-sulfate mineral with formula Na5Al3[AsO3(OH)]4[AsO2(OH)2]2(SO4)2·4H2O. It is both hydroxyarsenate and dihydroxyarsenate. It is among few relatively new minerals from the Torrecillas mine in Chile, the other being torrecillasite, canutite, chongite, gajardoite, leverettite, and magnesiokoritnigite. Although having quite common among minerals space group C2/c, juansilvaite has a new type of structure.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Juansilvaite 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.
Juansilvaite Localities Map
See where Juansilvaite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Bright pink (crystals), dull pale pink (opaque aggregates)
- Hardness (Mohs)
- 2.5
- Density
- 3.005 g/cm³
- Streak
- white
Chemical Properties
- Chemical Formula
- Na5Al3[AsO3(OH)]4[AsO2(OH)2]2(SO4)2·4H2O
- Elements
- Al, As, H, Na, O, S
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Juansilvaite FAQs
How do I identify Juansilvaite?
Juansilvaite can be identified by its hardness of 2.5 on the Mohs scale, Bright pink (crystals) color. Look for these key characteristics when examining specimens.
What color is Juansilvaite?
Juansilvaite typically appears in Bright pink (crystals), dull pale pink (opaque aggregates). Color can vary depending on impurities and formation conditions.
How hard is Juansilvaite?
Juansilvaite 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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