Kaliophilite is a rare potassium-rich tectosilicate mineral occurring primarily in alkaline igneous environments. It is often found as small, clear to white prismatic crystals or massive inclusions within volcanic ejecta and nepheline-bearing rocks.
Is this kaliophilite?
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 kaliophilite with a known reference. Kaliophilite sits at Mohs 6, softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Kaliophilite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Kaliophilite typically shows a silky luster.
- 4Match the color rangeCompare against the expected color range: white, colorless, yellowish, gray.
- 5Look at form & habitCrystal system: hexagonal. Typical habit: prismatic crystals, grains, massive.
Often confused with
Kaliophilite vs. its common look-alikes, and how to tell them apart in the field.
How to tell apart: Luster reads silky on Kaliophilite and vitreous to greasy on Nepheline.
How to tell apart: Luster reads silky on Kaliophilite and vitreous on Leucite.
How to tell apart: Luster reads silky on Kaliophilite and vitreous on Kalsilite.
Often found alongside kaliophilite
Minerals reported to co-occur with kaliophilite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- KAlSiO₄
- Mohs hardness
- 6
- Density
- 2.58-2.67 g/cm³
- Streak
- White
- Luster
- Silky
- Transparency
- Transparent
- Crystal system
- Hexagonal
- Crystal habit
- Prismatic Crystals, Grains, Massive
- Cleavage
- Perfect On {0001}
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Alkaline Igneous Rocks, Nepheline Syenites, Volcanic Ejecta
Where rockhounds find kaliophilite
Classic worldwide localities
- Monte Somma, Italy
- Kaiserstuhl, Germany
- Lake Baikal region, Russia
- Ontario, Canada
Field-hunting tip
Look in alkaline igneous rocks, nepheline syenites, volcanic ejecta country, the host setting where kaliophilite typically forms. If you start seeing nepheline, leucite, sanidine in float, you are in the right ground. Field specimens usually show a prismatic crystals, grains, massive habit, so train your eye for that shape before scanning the outcrop.
Common questions
How do you identify kaliophilite?+
Where is kaliophilite found?+
What rocks look like kaliophilite?+
What minerals are found with kaliophilite?+
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Find kaliophilite on the map
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