Potassic-ferri-leakeite is an extremely rare member of the amphibole supergroup. It is typically found in alkaline igneous environments and is primarily sought by advanced mineral collectors due to its complex chemical composition and rarity.
Is this potassic-ferri-leakeite?
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 potassic-ferri-leakeite with a known reference. Potassic-ferri-leakeite 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. Potassic-ferri-leakeite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Potassic-ferri-leakeite typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: dark green, black, brownish-black.
- 5Look at form & habitCrystal system: monoclinic. Typical habit: prismatic crystals.
Often confused with
Potassic-ferri-leakeite vs. its common look-alikes — and how to tell them apart in the field.
Often found alongside potassic-ferri-leakeite
Minerals reported to co-occur with potassic-ferri-leakeite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- {(K,Na)Na₂(Mg₂Fe³⁺₂Li)Si₈O₂₂(OH)₂}
- Mohs hardness
- 6
- Density
- 3.24 g/cm³
- Streak
- White
- Luster
- Vitreous
- Transparency
- Translucent
- Crystal system
- Monoclinic
- Crystal habit
- Prismatic Crystals
- Cleavage
- Perfect On {110}
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Alkaline Rocks
- Typical price
- $50-300 per specimen
Where rockhounds find potassic-ferri-leakeite
Classic worldwide localities
- Tajikistan
- Canada
Field-hunting tip
Look in alkaline rocks country — that is the host setting where potassic-ferri-leakeite typically forms. If you start seeing quartz, albite, aegirine 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 potassic-ferri-leakeite?+
Where is potassic-ferri-leakeite found?+
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What rocks look like potassic-ferri-leakeite?+
What minerals are found with potassic-ferri-leakeite?+
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Find potassic-ferri-leakeite on the map
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