Mineralpedia Details for Beudantite
Beudantite
An uncommon mineral named for Francois Sulpice Beudant, a French mineralogist of the University of Paris in France. Beudantite occurs as a secondary mineral in oxidized polymetallic deposits in localities in Germany, France, England, Greece, Namibia, Mexico, the United States, and Australian, among several others. Associated minerals include carminite, scorodite, mimetite, dussertite, arseniosiderite, pharmacosiderite, olivenite, Bayldonite, duftite, anglesite, cerussite, and azurite. Tabular yellow-green to green, red, brown, or black tabular crystals that can form as pseudo-cubes, pseudo-octahedra, and microcrystalline masses.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/beudantite.pdf
- Formula
- PbFe3+3(AsO4)(SO4)(OH)6
- Crystal System
- Trigonal
- Crystal Habit
- Blocky - Rhombohedral, Druse, Platy
- Cleavage
- Perfect, None, None
- Luster
- Adamantine
- Color
- brown, green, yellow, dark green, orange
- Streak
- greenish yellow
- Class
- Trigonal - Hexagonal Scalenohedral
- Fracture
- Brittle
- Hardness
- 4
- WebMineral
- View Beudantite
- Mindat
- View Beudantite
Beudantite from San Rafael mine, Nye Co., Nevada, United States
Extremely tiny pseudo-octahedral, brown crystals lining many vugs in this specimen.
Yellowish green compact micro crystals of Beudantite to less than 0.5mm.
Lime green or yellow-green compact micro crystals to less than 0.5mm with good coverage associated with green cuprian Adamite.
Beudantite from Richmond Sitting Bull mine, Galena, Lawrence Co., South Dakota, United States
Yellow-brown microcrystalline Beudantite crystals.
