Chrysothallite
A variety of Minerals
What is Chrysothallite?
Chrysothallite is a rare thallium-bearing chloride mineral with the formula K6Cu6TlCl17(OH)4•H2O. Chrysothallite is unique in being only the second mineral with essential trivalent thallium, a feature shared with natural thallium(III) oxide, avicennite. Another examples of natural thallium chlorides are steropesite, Tl3BiCl6, and lafossaite, TlCl. Chrysothallite is one of numerous fumarolic minerals discovered among fumarolic sites of the Tolbachik volcano, Kamchatka, Russia The mineral is named in allusion to its colour and thallium content.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Chrysothallite 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.
Chrysothallite Localities Map
See where Chrysothallite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Composition of Chrysothallite
The crystal structure of chrysothallite is unique. Its building elements are: layer of distorted CuCl4(OH)2 octahedra, in which the octahedra share edges isolated Tl-centered TlCl6 octahedra isolated Tl-centered TlCl4(H2O)2 octahedra KCl6 and KCl9 polyhedra, that connect all the above elements
Quick Facts
Physical Properties
- Color
- Golden-yellow to light yellow
- Density
- 2.97 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- K6Cu6Tl3+Cl17(OH)4·H2O
- Elements
- Cl, Cu, H, K, O, Tl
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Chrysothallite FAQs
How do I identify Chrysothallite?
Chrysothallite can be identified by its Golden-yellow to light yellow color. Look for these key characteristics when examining specimens.
What color is Chrysothallite?
Chrysothallite typically appears in Golden-yellow to light yellow. Color can vary depending on impurities and formation conditions.
What is the composition of chrysothallite of Chrysothallite?
The crystal structure of chrysothallite is unique. Its building elements are: layer of distorted CuCl4(OH)2 octahedra, in which the octahedra share edges isolated Tl-centered TlCl6 octahedra isolated Tl-centered TlCl4(H2O)2 octahedra KCl6 and KCl9 polyhedra, that connect all the above elements
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