Mineralpedia Details for 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·3H2O
- 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
Exceptional blue-green Spangolite crystals to 2mm.
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.
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).
