Tangdanite
A variety of Minerals
What is Tangdanite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Tangdanite 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.
Tangdanite Localities Map
See where Tangdanite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- emerald green
- Hardness (Mohs)
- 2 - 2.5
- Density
- 3.32 g/cm³
- Streak
- light green
Chemical Properties
- Chemical Formula
- Ca2Cu9(AsO4)4(SO4)0.5(OH)9 · 9H2O
- Elements
- As, Ca, Cu, H, O, S
Also Known As
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Tangdanite FAQs
How do I identify Tangdanite?
Tangdanite can be identified by its hardness of 2 - 2.5 on the Mohs scale, emerald green color. Look for these key characteristics when examining specimens.
What color is Tangdanite?
Tangdanite typically appears in emerald green. Color can vary depending on impurities and formation conditions.
How hard is Tangdanite?
Tangdanite has a hardness of 2 - 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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