Ferrohortonolite
A variety of Minerals
What is Ferrohortonolite?
Ferrohortonolite is a mineral variety in the olivine series composed of 70% to 90% fayalite and 30% to 10% forsterite or Fe/(Fe+Mg) ratio of 0.7 to 0.9. It is from the obsolete hortonolite terminology for the olivine series. It has been reported from Mount Gillies, Queensland, Australia; the Ilimaussaq complex of west Greenland; Pantelleria Island, Sicily; and from Choc village on Saint Lucia.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Ferrohortonolite 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
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