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Mineralpedia Details for Boleite

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Boleite

Boleite

Named after the type locality at Santa Rosalia, also called El Boleo, in the Boleo district of Baja California, Mexico. Boleite is an uncommon to rare secondary mineral that forms via the reaction between chloride with sulfides in oxidized lead-copper deposits. It can also be found in smelter slag that has been immersed in and leached by seawater. Localities for Boleite include in, additionally, the United States, Greece, England, Germany, Russia, Iran, Australia, Chile, and a few others. Typically seen as deep blue to indigo cubes.

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

Formula
KAg9Pb26Cu24Cl62(OH)48 
Crystal System
Isometric 
Crystal Habit
Pseudo Cubic 
Cleavage
Perfect, Good, None 
Luster
Vitreous - Pearly 
Color
indigo blue, light blue 
Streak
light green 
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
3-3.5 
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Mindat
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Boleite from Amelia mine, Boleo, Santa Rosalia, Baja California, Mexico

Boleite
            from Amelia mine, Boleo, Santa Rosalia, Baja California, Mexico

Large blue cubic crystals to 6mm.

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Boleite from Black Pine mine, Philipsburg, Granite Co., Montana, United States

Boleite
            from Black Pine mine, Philipsburg, Granite Co., Montana, United States

Sky blue cubic crystals to about 0.5mm.

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Boleite from Rowley mine, Maricopa Co., Arizona, United States

Boleite
            from Rowley mine, Maricopa Co., Arizona, United States

Bright blue micro crystals with no definite crystal shapes occurring throughout matrix with probable Caledonite. 

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