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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