Calciborite
A variety of Minerals
What is Calciborite?
Calciborite, CaB2O4, is a rare calcium borate mineral. It was first described in 1955 in the Novofrolovskoye copper–boron deposit, near Krasnoturinsk, Turinsk district, Northern Ural Mountains, Russia. It occurs in a skarn deposit formed in limestone adjacent to a quartz diorite intrusive. It occurs associated with: sibirskite (another rare calcium borate mineral), calcite, dolomite, garnet, magnetite and pyroxene. It has also been reported from the Fuka mine of Okayama Prefecture, Japan.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Calciborite 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.
Calciborite Localities Map
See where Calciborite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Chemical Properties
- Chemical Formula
- Ca(B2O4)
- Elements
- B, Ca, O
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