Hydroxykenoelsmoreite is a rare member of the pyrochlore supergroup featuring a vacancy-dominant structure. Collectors typically look for its distinct octahedral habit in granitic pegmatites, where it occurs as a primary or secondary tungsten-bearing mineral.
Is this hydroxykenoelsmoreite?
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 hydroxykenoelsmoreite with a known reference. Hydroxykenoelsmoreite sits at Mohs 5-5.5, softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Hydroxykenoelsmoreite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Hydroxykenoelsmoreite typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: yellow, brown, colorless.
- 5Look at form & habitCrystal system: cubic. Typical habit: octahedral crystals.
Often found alongside hydroxykenoelsmoreite
Minerals reported to co-occur with hydroxykenoelsmoreite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- W₂◻₂O₆(OH)
- Mohs hardness
- 5-5.5
- Density
- 4.5-5.2 g/cm³
- Streak
- White
- Luster
- Vitreous
- Transparency
- Translucent
- Crystal system
- Cubic
- Crystal habit
- Octahedral Crystals
- Cleavage
- None
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Granitic Pegmatites
- Typical price
- $50-300 per specimen
Where rockhounds find hydroxykenoelsmoreite
Classic worldwide localities
- Sweden
- Czech Republic
- Russia
Field-hunting tip
Look in granitic pegmatites country, the host setting where hydroxykenoelsmoreite typically forms. If you start seeing quartz, feldspar, mica in float, you are in the right ground. Field specimens usually show a octahedral crystals habit, so train your eye for that shape before scanning the outcrop.



