Biotite Group
A variety of Trioctahedral micas Group
What is Biotite Group?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Biotite Group 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.
Applies to all rocks & minerals.
Biotite Group Localities Map
See where Biotite Group is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
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