Podlesnoite is a rare calcium-barium carbonate-fluoride mineral discovered in the unique geological environment of the Khibiny Massif. Collectors look for its characteristic tabular crystal habit often associated with other alkaline pegmatite minerals. It is a prized rarity due to its extremely limited occurrence in alkaline rock complexes.

Hardness

3.5-4

Mohs

Luster

Vitreous

Streak

White

Transparency

Transparent

mineralrare

Podlesnoite

Hardness: 3.5-4
Luster: Vitreous
Streak: White
Transparency: Transparent

No image

Is this podlesnoite?

5-step field check

Run through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.

1
Test the hardness
Try to scratch podlesnoite with a known reference. Podlesnoite sits at Mohs 3.5-4, softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Streak: white.
3
Read the luster
Hold the specimen under a strong light. Luster: vitreous.
4
Match the color range
Compare against the expected color range: white.
5
Look at form & habit
Crystal system: orthorhombic. Typical habit: prismatic.

Often confused with

Podlesnoite vs. its common look-alikes, and how to tell them apart in the field.

Often found alongside podlesnoite

Minerals reported to co-occur with podlesnoite. Spotting these in float or country rock is a strong cue you are in the right ground.

All properties

Chemical formula: Ca₂Ba(CO₃)₂F₂
Mohs hardness: 3.5-4
Density: 3.62 g/cm³
Colors: White
Streak: White
Luster: Vitreous
Transparency: Transparent
Crystal system: Orthorhombic
Crystal habit: Prismatic
Cleavage: None
Fluorescence: Pinkish orange under SW UV; weak lilac blue under LW UV
Rarity: Rare
Uses: Collector
Host rock: In cavities within a hydrothermal lensoidal body in urtite

Where rockhounds find podlesnoite

Classic worldwide localities

Kirovskii apatite mine, Mt. Kukisvumchorr, Khibiny massif, Kola Peninsula, Russia

Field-hunting tip

Where it forms: In cavities within a hydrothermal lensoidal body in urtite. If you start seeing natrolite, biotite, ilmenite in float, you are in the right ground. Typical habit: prismatic. Train your eye for that shape before scanning the outcrop.

Common questions

How do you identify podlesnoite?+

Mohs hardness is 3.5-4. Luster: vitreous. The streak is white. Common colors include white.

Where is podlesnoite found?+

Notable localities include Kirovskii apatite mine, Mt. Kukisvumchorr, Khibiny massif, Kola Peninsula, Russia.

What rocks look like podlesnoite?+

Podlesnoite is most often confused with Barytocalcite, Alstonite. A quick hardness test and a streak check separate the look-alikes faster than color alone.

What minerals are found with podlesnoite?+

Podlesnoite commonly co-occurs with Natrolite, Biotite, Ilmenite, Aegirine, Lorenzenite, Barytocalcite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does podlesnoite form in?+

Where it forms: In cavities within a hydrothermal lensoidal body in urtite. Working float back to the host body is the standard way to chase a fresh occurrence.

What is podlesnoite used for?+

Podlesnoite is used in collector.

Find podlesnoite on the map

RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.