Aguilarite
A variety of Minerals
What is Aguilarite?
Aguilarite is bright lead-gray on fresh surfaces but becomes dull iron black when exposed to air. The mineral occurs with massive habit, as elongated pseudododecahedral crystals up to 3 cm (1.2 in), or as intergrowths with acanthite or naumannite.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Aguilarite 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.
Aguilarite Localities Map
See where Aguilarite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Formation of Aguilarite
Aguilarite is uncommon, and forms at relatively low temperatures in hydrothermal deposits rich in silver and selenium but deficient in sulfur. The mineral is known from a number of countries in North and South America, Europe, Asia, and Australasia. Aguilarite occurs in association with acanthite, calcite, naumannite, pearceite, proustite, silver, stephanite, and quartz.
Quick Facts
Physical Properties
- Color
- Bright lead-gray on fresh surfaces
- Hardness (Mohs)
- 2.5
- Density
- 7.65 g/cm³
- Streak
- grey-black
Chemical Properties
- Chemical Formula
- Ag4SeS
- Elements
- Ag, S, Se
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Aguilarite FAQs
How do I identify Aguilarite?
Aguilarite can be identified by its hardness of 2.5 on the Mohs scale, Bright lead-gray on fresh surfaces color. Look for these key characteristics when examining specimens.
What color is Aguilarite?
Aguilarite typically appears in Bright lead-gray on fresh surfaces. Color can vary depending on impurities and formation conditions.
How hard is Aguilarite?
Aguilarite has a hardness of 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the formation of aguilarite of Aguilarite?
Aguilarite is uncommon, and forms at relatively low temperatures in hydrothermal deposits rich in silver and selenium but deficient in sulfur. The mineral is known from a number of countries in North and South America, Europe, Asia, and Australasia. Aguilarite occurs in association with acanthite, calcite, naumannite, pearceite, proustite, silver, stephanite, and quartz.
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