Aktashite

A variety of Minerals

Aktashite specimen

What is Aktashite?

Aktashite is a rare arsenic sulfosalt mineral with formula Cu6Hg3As4S12. It is a copper mercury-bearing sulfosalt and is the only sulfosalt mineral with essential Cu and Hg yet known. It is of hydrothermal origin. It was published without approval of the IMA-CNMNC, but recognized as valid species by the IMA-CNMNC Sulfosalts Subcommittee (2008).

Market Value Factors

Pricing varies for every rock and mineral, so use these universal factors to gauge Aktashite 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.

Applies to all rocks & minerals.

More Images

Aktashite specimen
Robert M. Lavinsky

Quick Facts

Physical Properties

Color
Gray-black
Hardness (Mohs)
3.5
Rock tumbling
Not recommended
Density
5.72 g/cm³
Streak
black

Chemical Properties

Chemical Formula
Cu6Hg3As4S12
Elements
As, Cu, Hg, S
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Aktashite FAQs

How do I identify Aktashite?

Aktashite can be identified by its hardness of 3.5 on the Mohs scale, Gray-black color. Look for these key characteristics when examining specimens.

What color is Aktashite?

Aktashite typically appears in Gray-black. Color can vary depending on impurities and formation conditions.

How hard is Aktashite?

Aktashite has a hardness of 3.5 on the Mohs scale. This gives it moderate hardness.

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