Crocoite
Chromate Group

Crocoite

The Saffron Crystal

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Quick Facts

FormulaPbCrO₄
Crystal SystemMonoclinic
LusterAdamantine to Vitreous
StreakOrange-Yellow
TransparencyTranslucent
Specific Gravity5.99

Formation & Origin

Crocoite is lead chromate - one of the most visually striking minerals in existence. Its vivid orange-red color, combined with elongated prismatic crystals that can reach several centimeters in length, makes it a crown jewel of mineral collecting.

Crocoite forms in the oxidized zone of lead ore deposits where chromium is available from nearby ultramafic rocks. Lead from galena dissolves and combines with chromate ions to precipitate crocoite in fractures and cavities. The specific conditions - lead and chromium in the same oxidizing environment - are uncommon, making crocoite a genuinely rare mineral.

The Dundas district of Tasmania produces crocoite specimens that are unrivaled anywhere in the world. Long, slender, brilliantly colored prismatic crystals on limonite matrix from the Adelaide Mine and Red Lead Mine are among the most valued and recognizable mineral specimens in any collection. Crocoite is the mineral emblem of Tasmania. SAFETY NOTE: Crocoite contains lead and hexavalent chromium. Handle with care and wash hands.

Identification Guide

Crocoite is identified by its unmistakable vivid orange-red color, elongated prismatic crystal habit, high density (5.99 - very heavy), and adamantine luster. No other common mineral combines this specific color with this crystal form.

Distinguish from wulfenite (tabular/flat crystals rather than prismatic), vanadinite (hexagonal crystals rather than monoclinic), and realgar (similar color but softer, different crystal form). Crocoite's long, slender prismatic crystals in vivid orange are essentially diagnostic.

Spotting Fakes

Crocoite is a serious collector mineral rarely encountered in the general crystal market, so faking for mass consumption doesn't occur. For significant specimens, provenance from Tasmania's Dundas district is the premium factor. Crocoite crystals are extremely fragile (hardness 2.5, brittle) and many specimens have repaired or reattached crystals - examine attachment points carefully. UV light and acetone can detect glue repairs.

Some links in this post go to Amazon. Crystal Almanac earns a commission from qualifying purchases at no extra cost to you. Tools recommended here are ones we would use ourselves to run the tests described - the recommendation comes first, the link is downstream of it.

Cultural & Metaphysical Traditions

Presented as cultural traditions, not scientific evidence

Crocoite has no traditional metaphysical history - it's exclusively a collector's mineral. Some modern practitioners associate its vivid color with creative passion, vitality, and breakthrough energy. The stone's fragility is interpreted as a reminder that intense creative energy requires careful handling. NOTE: Due to its lead and chromium content, crocoite is strictly a display mineral. Never use for gem elixirs or carry loose in pockets.

Metaphysical and “healing” associations are cultural traditions, not medical advice or scientific fact. Crystals are not a substitute for professional medical care.

Where It's Found

Australia - Tasmania (Dundas, Adelaide Mine)

World's finest specimens, the definitive locality

Russia - Ural Mountains (Beresovsk)

Original discovery locality (1766)

Brazil - Various

Minor occurrences

Philippines - Various

Some specimens

Price Guide

Entry$20-80 small crystals
Mid-Range$100-500 quality Tasmanian specimens
Collector$1,000-20,000+ museum-grade Adelaide Mine specimens

Good to Know

💎

Scratch test: At hardness 2.5, Crocoite can be scratched with a fingernail. This is a display specimen, not a wearable stone.

🌍

Global supply: Found in 4 notable locations worldwide, from Australia to Philippines.

⚖️

Heft test: With a specific gravity of 5.99, Crocoite feels surprisingly heavy for its size. This weight is actually a useful identification tool.

Care & Safety

What crocoite can and cannot tolerate, based on its hardness (Mohs 2.5) and chemistry (PbCrO₄).

Can Crocoite go in water?

Not recommended. At Mohs 2.5, crocoite is soft enough that water can dull, etch, or degrade the surface. Clean it with a dry cloth instead. Important: crocoite contains lead and hexavalent chromium. Never use it for gem elixirs or crystal-infused water, and wash your hands after handling it.

Can Crocoite go in salt water?

No. Crocoite should stay away from water in general, and salt water is worse on every count: dissolved salt is corrosive while the stone is wet, and abrasive salt crystals are left behind in cracks and crevices as it dries.

Sources & References

The mineralogical and gemological data on this page is drawn from and can be cross-checked against these external references.

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