Nefedovite is a rare phosphate mineral found primarily in the hyperalkaline pegmatites of the Kola Peninsula. It typically occurs as small, colorless to pale yellow tabular crystals associated with other rare alkaline minerals like eudialyte and aegirine.
Is this nefedovite?
5-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch nefedovite with a known reference. Nefedovite sits at Mohs 3.5 — softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Nefedovite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Nefedovite typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: colorless, white, pale yellow.
- 5Look at form & habitCrystal system: tetragonal. Typical habit: tabular crystals, massive.
Often confused with
Nefedovite vs. its common look-alikes — and how to tell them apart in the field.
Often found alongside nefedovite
Minerals reported to co-occur with nefedovite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- Na₅Ca₄(PO₄)₄F
- Mohs hardness
- 3.5
- Density
- 2.81 g/cm³
- Streak
- White
- Luster
- Vitreous
- Transparency
- Transparent
- Crystal system
- Tetragonal
- Crystal habit
- Tabular Crystals, Massive
- Cleavage
- Perfect On {001}
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Alkaline Pegmatites
- Typical price
- $50-300 per specimen
Where rockhounds find nefedovite
Classic worldwide localities
- Kola Peninsula, Russia
- Mount Yukspor, Russia
Field-hunting tip
Look in alkaline pegmatites country — that is the host setting where nefedovite typically forms. If you start seeing apatite, nepheline, microcline in float, you are in the right ground. Field specimens usually show a tabular crystals, massive habit, so train your eye for that shape before scanning the outcrop.





