Boulangerite
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Boulangerite or antimonbleiblende is an uncommon monoclinic orthorhombic sulfosalt mineral, lead antimony sulfide, formula Pb5Sb4S11. It was named in 1837 in honor of French mining engineer Charles Bo
Boulangerite, covering a block of limestone
Jamesonite
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Jamesonite is a sulphosalt mineral, a lead, iron, antimony sulphide with formula Pb4FeSb6S14. With the addition of manganese it forms a series with benavidesite. It is a dark grey metallic mineral whi
Boulangerite
…with arsenopyrite, pyrrhotite, galena or sphalerite, but is also can occur with siderites, dolomites and quartzes. It may occur in intergrowths with jamesonite and meneghinite, quartz or sphalerite. Usual finding places include Germany, Switzerland, Canada, the Czech republic, the old Yugoslavia, the Ural…
Jamesonite crystals