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Palmierite

Year of discovery: 1907 (Monte Vesuvius, Italy), 2002 (Japan)

Locality list: A locality of palmierite

• K₂Pb(SO₄)₂
• (K,Na)₂Pb(SO₄)₂
• [K⁺₂][Pb²⁺][(SO₄)₂]^4-

• Class: Sulfate
• Radioactive: Very weak

• Pb => Sr: Kalistrontite

• Color: Colorless, White
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Hardness: 2
• Density: 4.3

• System: Trigonal
• Group: (-3)m, R(-3)m
• Lattice: a=5.5, c=20.8