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Mineralpedia Details for Spangolite

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Spangolite

Spangolite

Named for the American mineral collector who provided the type material, Norman Spang. Somewhat rare, Spangolite is a secondary mineral found in oxidized portion of hydrothermal copper deposits, and can be found at many localities in small amounts. Spangolite is pyoelectric, produces a charge when heated.  The type locality was originally noted to be “within a radius of 200 miles of Tombstone,” but it is likely that the type locality is Bisbee, Arizona, USA. Insoluble in water.

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

Formula
Cu6AlSO4(OH)12Cl·3H2
Crystal System
Trigonal 
Crystal Habit
Prismatic, Platy, Tabular 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
blue green, green, dark green, emerald green 
Streak
light green 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Conchoidal 
Hardness
2.5-3 
WebMineral
View Spangolite 
Mindat
View Spangolite 

Spangolite from Mex-Tex mine, Bingham, Socorro Co., New Mexico, United States

Spangolite
            from Mex-Tex mine, Bingham, Socorro Co., New Mexico, United States

Exceptional blue-green Spangolite crystals to 2mm.

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Spangolite from Shattuck Denn mine, Bisbee, Cochise Co., Arizona, United States

Spangolite
            from Shattuck Denn mine, Bisbee, Cochise Co., Arizona, United States

1-2.5mm euhedral and superb, deep blue Spangolite crystals terminated by pinacoids. Several of the crystals have translucent edges showing a rich greenish blue color. There are hundreds of red, octahedral Cuprite crystals scattered about and on the Spangolite. In between a few of the crystals are tiny sprays of Connellite. Spangolite is not on the Mindat list for this mine.

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Spangolite from Mason Pass, Yerington dist., Lyon Co., Nevada, United States

Spangolite
            from Mason Pass, Yerington dist., Lyon Co., Nevada, United States

Bluish green typical habit Spangolite crystals to 1.5mm with green sprays of Malachite (possible Brochantite).

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