Warwickite
A variety of Minerals
What is Warwickite?
Warwickite is an iron magnesium titanium borate mineral with formula: (MgFe)3Ti(O, BO3)2 or Mg(Ti,Fe, Al)(BO3)O. It occurs as brown to black prismatic orthorhombic crystals which are vitreous and transparent. It has a Mohs hardness of 3 to 4 and a specific gravity of 3.36.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Warwickite 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.
Warwickite Localities Map
See where Warwickite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Formation of Warwickite
It occurs metasomatized limestone skarns and in lamproite and carbonatite veinlets. It was first described in 1838 near Warwick, Orange County, New York. It has also been reported from Bancroft, Ontario; in Murcia Province, Spain; in Siberia and near Pyongyang, North Korea.
Quick Facts
Physical Properties
- Color
- Dark brown, grey to black; coppery tinge on cleavage at times; reddish brown in transmitted light
- Hardness (Mohs)
- 5.5 - 6
- Density
- 3.34 - 3.36 g/cm³
- Streak
- Bluish black
Chemical Properties
- Chemical Formula
- (Mg,Ti,Fe,Cr,Al)2O(BO3)
- Elements
- Al, B, Cr, Fe, Mg, O, Ti
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Warwickite FAQs
How do I identify Warwickite?
Warwickite can be identified by its hardness of 5.5 - 6 on the Mohs scale, Dark brown color. Look for these key characteristics when examining specimens.
What color is Warwickite?
Warwickite typically appears in Dark brown, grey to black; coppery tinge on cleavage at times; reddish brown in transmitted light. Color can vary depending on impurities and formation conditions.
How hard is Warwickite?
Warwickite has a hardness of 5.5 - 6 on the Mohs scale. This gives it moderate hardness.
What is the formation of warwickite of Warwickite?
It occurs metasomatized limestone skarns and in lamproite and carbonatite veinlets. It was first described in 1838 near Warwick, Orange County, New York. It has also been reported from Bancroft, Ontario; in Murcia Province, Spain; in Siberia and near Pyongyang, North Korea.
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