Comparison · Minerals vs Sulfide Minerals
Galena vs Stibnite
Galena and Stibnite are easy to confuse. Both sit near Mohs 2.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Below is a side-by-side comparison of their properties and the quick tests that separate them.
Key differences between Galena and Stibnite
- Both sit near Mohs 2.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- Streak color differs: Galena leaves a lead-gray streak on unglazed porcelain, Stibnite leaves lead gray.
- Both look metallic, so compare color, tarnish and weight rather than shine.
- Galena feels noticeably heavier for its size (specific gravity 7.4–7.6 versus 4.6 for Stibnite).
- Hold a thin edge to the light: Galena is Opaque, Stibnite is opaque.
- Well-formed crystals give it away: Galena is Cubic, Stibnite is orthorhombic.
Galena vs Stibnite properties
| Property | Galena | Stibnite |
|---|---|---|
| Type | Minerals | Sulfide Minerals |
| Mohs hardness | 2.5 | 2 |
| Luster | Metallic, bright | metallic |
| Streak | Lead-gray | Lead gray |
| Transparency | Opaque | opaque |
| Specific gravity | 7.4–7.6 | 4.6 |
| Crystal system | Cubic | orthorhombic |
| Common colors | Lead-gray, Silvery gray | Lead gray, Steel gray, Silvery gray |
| Rarity | common | uncommon |
| Typical specimen value | $2–$150+ | $10–$1500+ |
Which is more valuable?
Stibnite is usually the more valuable of the two: a typical collector specimen runs about $120 against $20 for Galena, and premium Stibnite can reach $1500 or more.
About Galena
Galena is lead sulfide, PbS, the primary ore of lead and a significant source of silver, crystallizing in the cubic system with a distinctive metallic luster and remarkably high density for its size. Its perfect cubic cleavage produces sharp-edged cubes and stair-stepped fracture surfaces that make it one of the easiest minerals to identify by touch alone. Galena has been mined since antiquity and remains one of the most commercially important sulfide minerals on Earth.
About Stibnite
Stibnite is antimony sulfide, the chief ore of antimony. It is famous for brilliant steel-gray metallic crystals that form long, slender, often curved or radiating prismatic blades with perfect lengthwise cleavage.
Galena vs Stibnite FAQ
Is Galena the same as Stibnite?
No. Galena is a mineral while Stibnite is a sulfide mineral. Both sit near Mohs 2.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Galena from Stibnite?
Both sit near Mohs 2.5, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Streak color differs: Galena leaves a lead-gray streak on unglazed porcelain, Stibnite leaves lead gray. Both look metallic, so compare color, tarnish and weight rather than shine.
Which is harder, Galena or Stibnite?
Galena is harder: Mohs 2.5 against Mohs 2 for Stibnite.
Which is more valuable, Galena or Stibnite?
Stibnite is usually the more valuable of the two: a typical collector specimen runs about $120 against $20 for Galena, and premium Stibnite can reach $1500 or more.
