Hafnon
A variety of Minerals
What is Hafnon?
Hafnon is a hafnium nesosilicate mineral, chemical formula (Hf,Zr)SiO4 or (Hf,Zr,Th,U,Y)SiO4. In natural zircon ZrSiO4 part of the zirconium is replaced by the very similar hafnium and so natural zircon is never pure ZrSiO4. A zircon with 100% hafnium substitution can be made synthetically and is hafnon. Hafnon occurs as transparent red to red orange tetragonal crystals with a hardness of 7.5. Hafnon occurs naturally in tantalum-bearing granite pegmatites in the Zambezia district, Mozambique and in weathered pegmatites at Mount Holland, Western Australia. It has also been reported from locations in Ontario, Quebec and Manitoba, Canada; North Carolina, United States; and in Zimbabwe.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Hafnon 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.
Hafnon Localities Map
See where Hafnon is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Red-orange, brown-yellow, colourless (rare)
- Hardness (Mohs)
- 7.5
- Density
- 6.97 g/cm³
Chemical Properties
- Chemical Formula
- HfSiO4
- Elements
- Hf, O, Si
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Hafnon FAQs
How do I identify Hafnon?
Hafnon can be identified by its hardness of 7.5 on the Mohs scale, Red-orange color. Look for these key characteristics when examining specimens.
What color is Hafnon?
Hafnon typically appears in Red-orange, brown-yellow, colourless (rare). Color can vary depending on impurities and formation conditions.
How hard is Hafnon?
Hafnon has a hardness of 7.5 on the Mohs scale. This makes it a relatively hard mineral suitable for jewelry.
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