Bideauxite

bideauxite

boleite

leadhillite

matlockite

Images

Formula: AgPb₂F₂Cl₃
Halide, silver-bearing mineral
Crystal System: Isometric
Specific gravity: 6.274 measured, 6.256 calculated
Hardness: 3
Streak: White
Colour: Colourless, becoming pale lavender on exposure to light
Solubility: Readily dissolved by hot or cold, dilute or conccentrated nitric acid; decomposed by dilute cold Hydrochloric acid, and by warm NH₄OH (AM 57.1003)
Environments

Hydrothermal environments

Localities

At an Unnamed prospect, Iquique, Iquique Province, Tarapacá Region, Chile, bideauxite is associated with boleite and atacamite (HOM).

From the type locality, the Mammoth-Saint Anthony Mine, St. Anthony deposit, Tiger, Mammoth Mining District, Pinal County, Arizona, USA, bideauxite was found on two museum specimens; on one it occurred as small (2 to 7 mm) crystals and masses enveloping and replacing boleite. Other associated minerals are leadhillite, matlockite, anglesite, cerussite, covellite and quartz. The specimen appears to have been derived from massive galena (AM 56.634-635).
The deposit is an oxidised base-metal mineral deposit (HOM).

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