Mcguinnessite
A variety of Minerals
What is Mcguinnessite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Mcguinnessite 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.
Quick Facts
Physical Properties
- Color
- light blue-green, Cu-rich cores slightly darker blue, Mg-rich rims very pale blue-green to nearly white
- Hardness (Mohs)
- 2.5
- Rock tumbling
- Not recommended
- Density
- 3.117 g/cm³
Chemical Properties
- Chemical Formula
- (Mg,Cu)2(CO3)(OH)2
- Elements
- C, Cu, H, Mg, O
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Mcguinnessite FAQs
How do I identify Mcguinnessite?
Mcguinnessite can be identified by its hardness of 2.5 on the Mohs scale, light blue-green color. Look for these key characteristics when examining specimens.
What color is Mcguinnessite?
Mcguinnessite typically appears in light blue-green, Cu-rich cores slightly darker blue, Mg-rich rims very pale blue-green to nearly white. Color can vary depending on impurities and formation conditions.
How hard is Mcguinnessite?
Mcguinnessite has a hardness of 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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