Żabińskiite is a rare zinc-bearing member of the vesuvianite group, first discovered in the Silesia-Kraków region of Poland. It typically occurs as small, yellowish-brown prismatic crystals within carbonate-hosted zinc-lead ore deposits. Collectors should look for its distinct zinc-dominant composition which differentiates it from the more common calcium-rich vesuvianite.

Hardness

Mohs

Luster

Vitreous

Streak

White

Transparency

Transparent

mineralrareVesuvianite Group family

Żabińskiite

Hardness: ~5
Luster: Vitreous
Streak: White
Transparency: Transparent

No image

Is this żabińskiite?

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 żabińskiite with a known reference. Żabińskiite sits at Mohs ~5, 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: brown.
5
Look at form & habit
Crystal system: triclinic. Typical habit: prismatic crystals.

Often confused with

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

mineral

Vesuvianite

Mohs 6-7

How to tell apart: Vesuvianite is the harder of the two (Mohs 6-7 vs. ~5).

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Often found alongside żabińskiite

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

All properties

Chemical formula: Ca[Al₀.₅(Ta,Nb)₀.₅](SiO₄)O
Mohs hardness: ~5
Density: 3.897 g/cm³
Colors: Brown
Streak: White
Luster: Vitreous
Transparency: Transparent
Crystal system: Triclinic
Crystal habit: Prismatic crystals
Cleavage: None
Rarity: Rare
Uses: Collector
Host rock: Filling fractures in weakly fractionated parts of anatectic pegmatites in an amphibolite migmatite

Where rockhounds find żabińskiite

Classic worldwide localities

Olkusz, Poland

Field-hunting tip

Where it forms: Filling fractures in weakly fractionated parts of anatectic pegmatites in an amphibolite migmatite. If you start seeing k-mica, zircon, polycrase- in float, you are in the right ground. Typical habit: prismatic crystals. Train your eye for that shape before scanning the outcrop.

Common questions

How do you identify żabińskiite?+

Mohs hardness is ~5. Luster: vitreous. The streak is white. Common colors include brown.

Where is żabińskiite found?+

Notable localities include Olkusz, Poland.

What rocks look like żabińskiite?+

Żabińskiite is most often confused with Vesuvianite. A quick hardness test and a streak check separate the look-alikes faster than color alone.

What minerals are found with żabińskiite?+

Żabińskiite commonly co-occurs with K-mica, Zircon, Polycrase-, Euxenite-, Feldspar. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does żabińskiite form in?+

Where it forms: Filling fractures in weakly fractionated parts of anatectic pegmatites in an amphibolite migmatite. Working float back to the host body is the standard way to chase a fresh occurrence.

What is żabińskiite used for?+

Żabińskiite is used in collector.

Find żabińskiite on the map

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