Saddlebackite is a rare lead-bismuth telluride mineral typically found as small grains within hydrothermal gold-bearing deposits. It is best identified through polished section microscopy or X-ray diffraction due to its similar physical appearance to other bismuth tellurides.

Hardness

2.5

Mohs

Luster

Metallic

Streak

Black

Transparency

Opaque

mineralrare

Saddlebackite

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

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Is this saddlebackite?

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

Often confused with

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

mineral

Tetradymite

Mohs 1.5-2

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

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

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Often found alongside saddlebackite

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

All properties

Chemical formula: Pb₂Bi₂Te₂S₃
Mohs hardness: 2.5
Density: 8.5 g/cm³
Colors: Lead-gray
Streak: Black
Luster: Metallic
Transparency: Opaque
Crystal system: Trigonal
Crystal habit: Anhedral Grains, Inclusions
Cleavage: Perfect
Rarity: Rare
Uses: Collector
Host rock: Hydrothermal Quartz Veins
Typical price: $50-300 per specimen

Where rockhounds find saddlebackite

Classic worldwide localities

Saddleback, New South Wales, Australia

Field-hunting tip

Look in hydrothermal quartz veins country, the host setting where saddlebackite typically forms. If you start seeing gold, tellurobismuthite, pyrite in float, you are in the right ground. Field specimens usually show a anhedral grains, inclusions habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify saddlebackite?+

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

Where is saddlebackite found?+

Notable localities include Saddleback, New South Wales, Australia.

How much is saddlebackite worth?+

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

Is saddlebackite safe to handle?+

It contains toxic constituents. Contains lead and bismuth; wash hands thoroughly after handling and avoid inhaling dust if crushed. Handle with care, avoid grinding or breathing dust, and store separately.

What rocks look like saddlebackite?+

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

What minerals are found with saddlebackite?+

Saddlebackite commonly co-occurs with Gold, Tellurobismuthite, Pyrite, Chalcopyrite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does saddlebackite form in?+

Saddlebackite typically forms in hydrothermal quartz veins. Working float back to the host body is the standard way to chase a fresh occurrence.

What is saddlebackite used for?+

Saddlebackite is used in collector.

Find saddlebackite on the map

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