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Plumbojarosite

Year of discovery: 1902 (Cooks Peak District, USA), 1981 (Japan)

Locality list: 3 localities of plumbojarosite

• Pb_0.5Fe₃(SO₄)₂(OH)₆
• [Pb²⁺_0.5][Fe³⁺₃][(OH)₆|(SO₄)₂]^10-

• Class: Alunite group < Alunite supergroup
• Class: Sulfate - Hydroxide
• Soluble in: HCl (Slowly), HNO₃ (Slowly), H₂SO₄ (Slowly)

• Pb => NH₄: Ammoniojarosite
• Pb => Ag: Argentojarosite
• Pb => Tl: Dorallcharite
• Pb => H₃O: Hydroniumjarosite
• Pb => K: Jarosite
• Pb => Na: Natrojarosite

• Fe => Pb_0.5Cu: Beaverite-(Cu)
• Fe => Pb_0.5Zn: Beaverite-(Zn)

• SO₄ => HPO₄: Kintoreite

• SO₄ => Pb_0.5AsO₄: Beudantite
• SO₄ => Pb_0.5PO₄: Corkite

• Color: Yellowish brown, Dark brown
• Streak: Pale yellow
• Luster: Silky
• Diaphaneity: Translucent-Opaque

• Cleavage: Indistinct on {1014} (3 planes)
• Hardness: 1.5-2
• Density: 3.7

• System: Trigonal
• Group: (-3)m, R(-3)m
• Lattice: a=7.3, c=33.7