Norrishite
A variety of Minerals
What is Norrishite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Norrishite 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.
Norrishite Localities Map
See where Norrishite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- black to brownish black
- Hardness (Mohs)
- 2.5
- Density
- 3.255 g/cm³
- Streak
- light brown
Chemical Properties
- Chemical Formula
- KLiMn3+2(Si4O10)O2
- Elements
- K, Li, Mn, O, Si
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Norrishite FAQs
How do I identify Norrishite?
Norrishite can be identified by its hardness of 2.5 on the Mohs scale, black to brownish black color. Look for these key characteristics when examining specimens.
What color is Norrishite?
Norrishite typically appears in black to brownish black. Color can vary depending on impurities and formation conditions.
How hard is Norrishite?
Norrishite 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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