Brochantite
A variety of Minerals
What is Brochantite?
Brochantite is an uncommon mineral that often boasts a deep green or blue-green hue. The mineral derives its unusual nomenclature from the surname of a French geologist, A.J.M. Brochant de Villiers. Though brochantite does not have any commercial or industrial uses, it may form impressive and colorful clusters of crystals - such specimens are prized by collectors.
Etymology & Origins
Formed in arid climates or in rapidly oxidizing copper sulfide deposits, it was named by Armand Lévy for his fellow Frenchman, geologist and mineralogist A. J. M. Brochant de Villiers.
Uses & Applications
Brochantite is a source of copper, though it does not occur in large amounts and is not a great ore for the metal. Brochantite is often nothing more than a corrosive material associated with bronze, and may actually damage bronze materials including statues and monuments.
Healing Properties
Brochantite is believed to heal pain by helping to reveal past traumas and restoring the body with positive healing energy. When used during meditation outdoors, it is said to connect the individual with nature, bringing a sense of peace and calm. Some believe it to be helpful for dealing with anxiety and depression.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Brochantite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Brochantite Localities Map
See where Brochantite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Associated Chakras
Health & Safety Information
- ⚠️Brochantite dust is toxic because it contains heavy metals Copper.
- ⚠️Brochantite is a common corrosion product on bronze sculptures located in urban areas, where atmospheric sulfur dioxide (a common pollutant) is present. Brochantitie forms mainly in exposed areas where weathering prevents accumulation copper ions and enhancement in the acidity of water films. In sheltered areas, the main corrosion product is antlerite.
- ⚠️It's advisable to handle brochantite carefully to avoid generating dust and wash hands thoroughly afterward. When cutting or polishing brochantite, wear a dust mask to prevent inhaling heavy metal particles. Store brochantite in a sealed container in a well-ventilated area, away from children and pets. For those involved in crystal healing, never put it in your mouth.
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Quick Facts
Physical Properties
- Color
- Green, emerald green, green-black, light green
- Hardness (Mohs)
- 3.5 - 4
- Density
- 4.09 g/cm³
- Streak
- Pale green
- Luster
- Pearly, Vitreous
- Crystal System
- Monoclinic
Chemical Properties
- Chemical Formula
- Cu4(SO4)(OH)6
- Elements
- Cu, H, O, S
Also Known As
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Brochantite FAQs
How do I identify Brochantite?
Brochantite can be identified by its hardness of 3.5 - 4 on the Mohs scale, Green color, Pearly, Vitreous luster, Monoclinic crystal system. Look for these key characteristics when examining specimens.
What color is Brochantite?
Brochantite typically appears in Green, emerald green, green-black, light green. Color can vary depending on impurities and formation conditions.
How hard is Brochantite?
Brochantite has a hardness of 3.5 - 4 on the Mohs scale. This gives it moderate hardness.
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