Babkinite is an extremely rare lead-bismuth sulfoselenide-telluride mineral known primarily from epithermal gold-telluride deposits. It is usually found as microscopic inclusions or intergrowths with other lead minerals and tellurides, making it difficult for collectors to acquire as a macro specimen.

Hardness

2.5

Mohs

Luster

Metallic

Streak

Black

Transparency

Opaque

mineralrarePb-Pb-Se-Te-S system family

Babkinite

Hardness: 2.5
Luster: Metallic
Streak: Black
Transparency: Opaque

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Is this babkinite?

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 babkinite with a known reference. Babkinite sits at Mohs 2.5, softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Babkinite leaves a black streak.
3
Read the luster
Hold the specimen under a strong light. Babkinite typically shows a metallic luster.
4
Match the color range
Compare against the expected color range: lead-gray, tin-white.
5
Look at form & habit
Crystal system: orthorhombic. Typical habit: anhedral grains, interstitial masses.

Often confused with

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

mineral

Galena

Mohs 2.5

How to tell apart: Streak differs, so Babkinite leaves black, Galena leaves lead-gray.

How to tell apart: Streak differs, so Babkinite leaves black, Tetradymite leaves lead-gray.

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Often found alongside babkinite

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

All properties

Chemical formula: Pb₂Bi₂S₃Se₂Te
Mohs hardness: 2.5
Density: 8.06 g/cm³
Colors: Lead-gray Tin-white
Streak: Black
Luster: Metallic
Transparency: Opaque
Crystal system: Orthorhombic
Crystal habit: Anhedral Grains, Interstitial Masses
Cleavage: None Observed
Rarity: Rare
Uses: Collector
Host rock: Epithermal Gold Deposits

Where rockhounds find babkinite

Classic worldwide localities

Kochbulak deposit, Uzbekistan

Field-hunting tip

Look in epithermal gold deposits country, the host setting where babkinite typically forms. If you start seeing galena, gold, chalcopyrite in float, you are in the right ground. Field specimens usually show a anhedral grains, interstitial masses habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify babkinite?+

Mohs hardness is 2.5. It typically shows a metallic luster. The streak is black. Common colors include lead-gray, tin-white.

Where is babkinite found?+

Notable localities include Kochbulak deposit, Uzbekistan.

Is babkinite safe to handle?+

It contains toxic constituents. Contains lead and bismuth; handle with care and wash hands thoroughly after handling. Do not ingest or inhale dust. Handle with care, avoid grinding or breathing dust, and store separately.

What rocks look like babkinite?+

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

What minerals are found with babkinite?+

Babkinite commonly co-occurs with Galena, Gold, Chalcopyrite, Tetradymite, Tellurides. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does babkinite form in?+

Babkinite typically forms in epithermal gold deposits. Working float back to the host body is the standard way to chase a fresh occurrence.

What is babkinite used for?+

Babkinite is used in collector.

Find babkinite on the map

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