Berthierite

Berthierite is a mineral, a sulfide of iron and antimony with formula FeSb₂S₄. It is steel grey in colour with a metallic lustre which can be covered by an iridescent tarnish. Because of its appearance it is often mistaken for stibnite.

Additional recommended knowledge

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It was discovered in France in 1827 and named for the French chemist, Pierre Berthier.

References

• Mineral galleries
• Mindat
• Webmineral