Ferro-tschermakite
A variety of Tschermakite Root Name Group
What is Ferro-tschermakite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Ferro-tschermakite 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.
Ferro-tschermakite Localities Map
See where Ferro-tschermakite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Medium green to dark green to green-black to black, also brownish-green.
- Hardness (Mohs)
- 5 - 6
- Streak
- Pale grey-green
Chemical Properties
- Chemical Formula
- ☐{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2 Ferro-tschermakite is defined as a tschermakite group member with the following dominant elements: C position: Fe as the dominant divalent cation and Al as the dominant trivalent cation. W position: (OH) as the dominant anion
- Elements
- Al, Ca, Fe, H, O, Si
Also Known As
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Ferro-tschermakite FAQs
How do I identify Ferro-tschermakite?
Ferro-tschermakite can be identified by its hardness of 5 - 6 on the Mohs scale, Medium green to dark green to green-black to black color. Look for these key characteristics when examining specimens.
What color is Ferro-tschermakite?
Ferro-tschermakite typically appears in Medium green to dark green to green-black to black, also brownish-green.. Color can vary depending on impurities and formation conditions.
How hard is Ferro-tschermakite?
Ferro-tschermakite has a hardness of 5 - 6 on the Mohs scale. This gives it moderate hardness.