mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Mineralpedia Details for Brochantite

Reset

Brochantite

Brochantite

Named in honor of Professor Andre Jean Francois Marie Brochant de Villiers, a French geologist and mineralogist of the School of Mines in Paris, France. Brochantite is a relatively common mineral and can be found typically in oxidized copper deposits, however it is rarely in quantities to be used as an ore, and forms in arid regions of low acidity. Localities include in Russia, Romania, Italy, Germany, England, Namibia, Algeria, Australia, Chile, the United States, and many others.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/brochantite.pdf

Formula
Cu4SO4(OH)6 
Crystal System
Monoclinic 
Crystal Habit
Acicular, Prismatic, Druse 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
green, emerald green, black 
Streak
pale green 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
WebMineral
View Brochantite 
Mindat
View Brochantite 

Brochantite from Grandview mine, Coconino Co., Arizona, United States

Brochantite
            from Grandview mine, Coconino Co., Arizona, United States

Emerald green fine, acicular crystals to 1mm.

Deep emerald green acicular crystals to 3mm.

Click thumbnail images for larger view.

Brochantite from La Farola mine, Tierra Amarilla, Copiapó, Chile

Brochantite
            from La Farola mine, Tierra Amarilla, Copiapó, Chile

Green acicular spray to 1.1cm.

Click thumbnail images for larger view.

Brochantite from Los Azules mine, Quebrada San Miguel, Copiapó Prov., Atacama, Chile

Brochantite
            from Los Azules mine, Quebrada San Miguel, Copiapó Prov., Atacama, Chile

Knock-out gorgeous emerald green, glassy, acicular crystals with chisel poit terminations.

Click thumbnail images for larger view.

Brochantite from Dos Adrianas mine, Zapallar dist., Copiapo Prov., Atacama, Chile

Brochantite
            from Dos Adrianas mine, Zapallar dist., Copiapo Prov., Atacama, Chile

Sprays of thin green bladed Brochantite to 3mm with blue Lustrous Linarite on Quartz matrix.

Click thumbnail images for larger view.

Brochantite from Tsumeb mine, Tsumeb, Namibia

Brochantite
            from Tsumeb mine, Tsumeb, Namibia

Beautiful emerald green bladed Brochantite crystals in divergent clusters to 5mm nested on a piece of white Calcite matrix with a slender vein of red-purple Cuprite at the base.

Click thumbnail images for larger view.

Brochantite from San Miguel area, Los Azules dist., Copiapo Prov., Atacama Region, Chile

Brochantite
            from San Miguel area, Los Azules dist., Copiapo Prov., Atacama Region, Chile

Several 3-5mm radial sprays of deep green, sparkly Brochantite lining a drusy Quartz lined vug.

Click thumbnail images for larger view.

Brochantite from Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States

Brochantite
            from Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States
Special Info
XRD Confirmed

This comes with a label which states that the Brochantite was identified with XRD. To me, it looks more like devilline or even Aurichalcite. It is a minor amount whatever it is. It also has different sulfides , maybe Chalcocite, maybe some Bornite. It is not magnetic.

Click thumbnail images for larger view.

Brochantite from Bingham dist., Socorro Co., New Mexico, United States

Brochantite
            from Bingham dist., Socorro Co., New Mexico, United States

For this locality, this is a pretty good specimen of fine, acicular Brochantite in 1mm sprays with good coverage on Baryte. 

Click thumbnail images for larger view.

Brochantite from Old Dad mine, Springs Mtn., Idaho, United States

Brochantite
            from Old Dad mine, Springs Mtn., Idaho, United States

Exceptional equant emerald green crystals of Brochantite to 3mm in and around vugs with blue crystal balls of Quartz. Ex. Charles Noll collection.

Click thumbnail images for larger view.

Brochantite from Morenci mine, Greenlee Co., Arizona, United States

Brochantite
            from Morenci mine, Greenlee Co., Arizona, United States

Free-standing green pointed needles of Brochantite on one side with flat lying emerald green needles on the other side. This is a superb, lovely specimen of Brochantite, especially for this mine. Personally collected by RJ Waidler.

Click thumbnail images for larger view.

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2019 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map