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Jamesonite(Photo)

Pb4FeSb6S14

Parajamesonite is dimorphous.

• Polymorph: Parajamesonite
• Fe => Mn: Benavidesite
• Class: Sulfosalt
• Comments: Impossible to distinguish from boulangerite

• Color: Grayish black
• Streak: Grayish black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Acicular along [001]
• Aggregate: Filform
• Striation: [001]
• Twin: {100}

• Cleavage: {001} and {010} Good (2 planes)
• Hardness: 2.5
• Density: 5.6

• System: Monoclinic
• Group: 2/m, P2(1)/a
• Lattice: a=15.6, b=19.0, c=4.0, a^c=91.5

Name: Robert Jameson(1774-1854), Scottish mineralogist

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