Comparison · Minerals vs Vanadate Minerals
Crocoite vs Vanadinite
Crocoite and Vanadinite are easy to confuse. Both sit near Mohs 2.5–3, 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 Crocoite and Vanadinite
- Both sit near Mohs 2.5–3, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
- Streak color differs: Crocoite leaves a orange-yellow streak on unglazed porcelain, Vanadinite leaves brownish yellow.
- Luster is different: Crocoite is adamantine to vitreous/resinous while Vanadinite is resinous.
- Vanadinite feels noticeably heavier for its size (specific gravity 6.9 versus 5.9–6.1 for Crocoite).
- Hold a thin edge to the light: Crocoite is Translucent, Vanadinite is translucent.
- They overlap in red and orange, but Vanadinite also comes in brown and yellow.
- Well-formed crystals give it away: Crocoite is Monoclinic, Vanadinite is hexagonal.
Crocoite vs Vanadinite properties
| Property | Crocoite | Vanadinite |
|---|---|---|
| Type | Minerals | Vanadate Minerals |
| Mohs hardness | 2.5–3 | 3 |
| Luster | Adamantine to vitreous/resinous | resinous |
| Streak | Orange-yellow | Brownish yellow |
| Transparency | Translucent | translucent |
| Specific gravity | 5.9–6.1 | 6.9 |
| Crystal system | Monoclinic | hexagonal |
| Common colors | Bright orange-red, Red | Red, Orange, Brown, Yellow |
| Rarity | common | uncommon |
| Typical specimen value | $2–$150+ | $10–$500+ |
Which is more valuable?
Vanadinite is usually the more valuable of the two: a typical collector specimen runs about $60 against $20 for Crocoite, and premium Vanadinite can reach $500 or more.
About Crocoite
Crocoite is lead chromate, PbCrO4, prized for its vivid orange-red color and slender, elongated prismatic crystals that rank among the most vibrantly colored of any mineral. It forms in the oxidized zones of lead deposits where chromium-bearing solutions interact with lead minerals, a fairly uncommon geochemical pairing. It holds historical significance as the first mineral source of the element chromium, discovered and named in the late 18th century.
About Vanadinite
Vanadinite is a lead chlorovanadate famous for its brilliant red to orange hexagonal crystals. A heavy, secondary mineral of oxidized lead deposits, it is highly sought by collectors and serves as an ore of both vanadium and lead.
Crocoite vs Vanadinite FAQ
Is Crocoite the same as Vanadinite?
No. Crocoite is a mineral while Vanadinite is a vanadate mineral. Both sit near Mohs 2.5–3, so a scratch test alone will not separate them. Lean on luster, streak and heft instead.
How can you tell Crocoite from Vanadinite?
Both sit near Mohs 2.5–3, so a scratch test alone will not separate them. Lean on luster, streak and heft instead. Streak color differs: Crocoite leaves a orange-yellow streak on unglazed porcelain, Vanadinite leaves brownish yellow. Luster is different: Crocoite is adamantine to vitreous/resinous while Vanadinite is resinous.
Which is harder, Crocoite or Vanadinite?
They are about equally hard, both near Mohs 2.5–3.
Which is more valuable, Crocoite or Vanadinite?
Vanadinite is usually the more valuable of the two: a typical collector specimen runs about $60 against $20 for Crocoite, and premium Vanadinite can reach $500 or more.
