Testibiopalladite is a rare palladium telluride that typically occurs as microscopic, metallic-lustered grains within sulfide-rich igneous rocks. It is most often identified through polished section analysis and microprobe examination in samples from platinum-group element (PGE) deposits.

Hardness

Mohs

Luster

Metallic

Streak

Black

Transparency

Opaque

mineralrareCooperite Group family

Testibiopalladite

Hardness: 5
Luster: Metallic
Streak: Black
Transparency: Opaque

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Is this testibiopalladite?

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 testibiopalladite with a known reference. Testibiopalladite 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. Testibiopalladite leaves a black streak.
3
Read the luster
Hold the specimen under a strong light. Testibiopalladite typically shows a metallic luster.
4
Match the color range
Compare against the expected color range: white, gray.
5
Look at form & habit
Crystal system: cubic. Typical habit: anhedral grains.

Often confused with

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

How to tell apart: Testibiopalladite is noticeably harder (Mohs 5 vs. 2.5).

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Often found alongside testibiopalladite

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

All properties

Chemical formula: Pd₃Te₂
Mohs hardness: 5
Density: 9.9 g/cm³
Colors: White Gray
Streak: Black
Luster: Metallic
Transparency: Opaque
Crystal system: Cubic
Crystal habit: Anhedral Grains
Cleavage: None
Rarity: Rare
Uses: Collector
Host rock: Mafic and Ultramafic Igneous Complexes
Typical price: $50-300 per micro-mount

Where rockhounds find testibiopalladite

Classic worldwide localities

Stillwater Complex, USA
Sudbury Basin, Canada
Norilsk, Russia

Field-hunting tip

Look in mafic and ultramafic igneous complexes country — that is the host setting where testibiopalladite typically forms. If you start seeing platinum, chalcopyrite, pentlandite in float, you are in the right ground. Field specimens usually show a anhedral grains habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify testibiopalladite?+

Mohs hardness is 5. It typically shows a metallic luster. The streak is black. Common colors include white, gray.

Where is testibiopalladite found?+

Notable localities include Stillwater Complex, USA; Sudbury Basin, Canada; Norilsk, Russia.

How much is testibiopalladite worth?+

Typical asking prices fall in the range of $50-300 per micro-mount. Quality, size, and provenance can move individual specimens well outside that range.

Is testibiopalladite safe to handle?+

It contains toxic constituents. Contains tellurium and palladium; avoid creating dust while handling or crushing. Wash hands thoroughly after contact. Handle with care, avoid grinding or breathing dust, and store separately.

What rocks look like testibiopalladite?+

Testibiopalladite is most often confused with Cooperite, Vysotskite, Kotulskite. A quick hardness test and a streak check separate the look-alikes faster than color alone.

What minerals are found with testibiopalladite?+

Testibiopalladite commonly co-occurs with Platinum, Chalcopyrite, Pentlandite, Pyrrhotite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does testibiopalladite form in?+

Testibiopalladite typically forms in mafic and ultramafic igneous complexes. Working float back to the host body is the standard way to chase a fresh occurrence.

What is testibiopalladite used for?+

Testibiopalladite is used in collector.

Find testibiopalladite on the map

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