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Mineralpedia Details for Boulangerite

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Boulangerite

Boulangerite

Named for Charles Louis Boulanger, the French mining engineer who was the first to call the species to attention. Boulangerite is relatively common and widespread, and can be found in medium to high-temperature hydrothermal veins. Some of the many localities include in France, Italy, Sweden, Germany, Serbia, the Czech Republic, the United States, Mexico, and Canada. Minerals associated with Boulangerite include lead sulfosalts, galena, stibnite, sphalerite, pyrite, arsenopyrite, siderite, and quartz. Sometimes easily confused with jamesonite.

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

Formula
Pb5Sb4S11 
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Massive - Fibrous, Plumose 
Cleavage
Indistinct, Indistinct, None 
Luster
Metallic 
Color
lead gray, blue gray, gray 
Streak
reddish brown 
Class
Orthorhombic 
Fracture
Brittle 
Hardness
2.5 
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Boulangerite from Bueno Noche mine, Durango, Mexico

Boulangerite
            from Bueno Noche mine, Durango, Mexico

Boulangerite specimen with abundant coverage of silvery, acicular Boulangerite crystals covering matrix associated with Pyrite

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Boulangerite from Silver Hill Mine, British Columbia, Canada

Boulangerite
            from Silver Hill Mine, British Columbia, Canada

Grey acicular mat of Boulangerite.

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Boulangerite from Wheal Boys, Port Isaac, St. Endellion, Cornwall, England

Boulangerite
            from Wheal Boys, Port Isaac, St. Endellion, Cornwall, England
Special Info
Phillips Collection

This piece contains abundant filliform, silvery crystals of Boulangerite to 1cm strung throughout Quartz matrix.

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Boulangerite from Cleveland mine, Stevens Co., Washington, United States

Boulangerite
            from Cleveland mine, Stevens Co., Washington, United States

Solid mass of compact Boulangerite ore composed of needle-like crystals in tight divergent groups.

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Boulangerite from Felsobanya, Baia Mare, Maramures Co., Romania

Boulangerite
            from Felsobanya, Baia Mare,  Maramures Co., Romania

Nice miniature with a nest of Boulangerite crystals covering the face in a 3.5 x 3cm area. Also shows some Chalcopyrite crystals to 6mm and Siderite or Dolomite in association.

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Boulangerite from Sunshine mine, Kellogg, Shoshone Co., Idaho, United States

Boulangerite
            from Sunshine mine, Kellogg, Shoshone Co., Idaho, United States

Steely gray needles of Boulangerite in bunches to 1cm.

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Boulangerite from Huanzala mine, Huallanca dist., Huánuco, Peru

Boulangerite
            from Huanzala mine, Huallanca dist., Huánuco, Peru

Rich coverage of steely acicular crystals.

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Boulangerite from Alexander mine, Pennington Co., South Dakota, United States

Boulangerite
            from Alexander mine, Pennington Co., South Dakota, United States
Special Info
XRD Confirmed,EDS Confirmed

Rich specimen of silvery metallic and compact crystals of Boulangerite. Very rare for the Black Hills. EDS/XRD

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Boulangerite from Melba mine, North Dundas, Zeehan dist., Tasmania, Australia

Boulangerite
            from Melba mine, North Dundas, Zeehan dist., Tasmania, Australia

Compact divergent crystals to 3cm. 

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