Vuoriyarvite-K is a rare titanium-niobium silicate mineral belonging to the labuntsovite group. It typically occurs as small prismatic crystals in alkaline igneous rock environments, often found associated with minerals like aegirine and microcline.
Is this vuoriyarvite-k?
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 vuoriyarvite-k with a known reference. Vuoriyarvite-K sits at Mohs 5 — softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Vuoriyarvite-K leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Vuoriyarvite-K typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: yellow, brown, colorless, white.
- 5Look at form & habitCrystal system: monoclinic. Typical habit: prismatic crystals.
Often confused with
Vuoriyarvite-K vs. its common look-alikes — and how to tell them apart in the field.
Often found alongside vuoriyarvite-k
Minerals reported to co-occur with vuoriyarvite-k. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- (K,Na,Ba,Ca)₂(Ti,Nb)₂(Si₄O₁₂)O(OH,F)·n(H₂O)
- Mohs hardness
- 5
- Density
- 2.85-2.90 g/cm³
- Streak
- White
- Luster
- Vitreous
- Transparency
- Transparent
- Crystal system
- Monoclinic
- Crystal habit
- Prismatic Crystals
- Cleavage
- None
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Alkaline Pegmatites
- Typical price
- $50-300 per specimen
Where rockhounds find vuoriyarvite-k
Classic worldwide localities
- Vuoriyarvi alkaline massif, Russia
- Khibiny Massif, Russia
- Mont Saint-Hilaire, Canada
Field-hunting tip
Look in alkaline pegmatites country — that is the host setting where vuoriyarvite-k typically forms. If you start seeing aegirine, microcline, nepheline in float, you are in the right ground. Field specimens usually show a prismatic crystals habit, so train your eye for that shape before scanning the outcrop.
Common questions
How do you identify vuoriyarvite-k?+
Where is vuoriyarvite-k found?+
How much is vuoriyarvite-k worth?+
What rocks look like vuoriyarvite-k?+
What minerals are found with vuoriyarvite-k?+
What kind of rock does vuoriyarvite-k form in?+
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Find vuoriyarvite-k on the map
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