Alamosite
A variety of Minerals
What is Alamosite?
Alamosite (Pb12Si12O36) is a colorless silicate mineral named after the place where it was discovered, Álamos, Sonora, Mexico. It is a rare secondary mineral occurring in the oxidized zones of lead-rich deposits. For example, the infobox picture shows its association with black leadhillite.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Alamosite 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.
Quick Facts
Physical Properties
- Color
- Colorless to white, cream, or light gray
- Hardness (Mohs)
- 4.5
- Rock tumbling
- Not recommended
- Streak
- white
Chemical Properties
- Chemical Formula
- PbSiO3 Also given as Pb12(Si12O36).
- Elements
- O, Pb, Si
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Alamosite FAQs
How do I identify Alamosite?
Alamosite can be identified by its hardness of 4.5 on the Mohs scale, Colorless to white color. Look for these key characteristics when examining specimens.
What color is Alamosite?
Alamosite typically appears in Colorless to white, cream, or light gray. Color can vary depending on impurities and formation conditions.
How hard is Alamosite?
Alamosite has a hardness of 4.5 on the Mohs scale. This gives it moderate hardness.
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