Heptasartorite

A variety of Minerals

What is Heptasartorite?

Heptasartorite is a very rare mineral with formula Tl7Pb22As55S108. It belongs to sartorite homologous series. It is related to other recently approved minerals of the series: enneasartorite and hendekasartorite. All three minerals come from a quarry in Lengenbach, Switzerland, which is famous of thallium minerals. Chemically similar minerals include edenharterite and hutchinsonite.

Market Value Factors

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

Quick Facts

Physical Properties

Color: Lead-grey, grey
Hardness (Mohs): 3 - 3.5
Rock tumbling: Not recommended
Density: 4.9 g/cm³
Streak: Dark brown

Chemical Properties

Chemical Formula: Tl₇Pb₂₂As₅₅S₁₀₈
Elements: As, Pb, S, Tl

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Heptasartorite FAQs

How do I identify Heptasartorite?

Heptasartorite can be identified by its hardness of 3 - 3.5 on the Mohs scale, Lead-grey color. Look for these key characteristics when examining specimens.

What color is Heptasartorite?

Heptasartorite typically appears in Lead-grey, grey. Color can vary depending on impurities and formation conditions.

How hard is Heptasartorite?

Heptasartorite has a hardness of 3 - 3.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.