[ Top ] [ Japanese ]

Pollucite

Year of discovery: 1846 (La Speranza (Pisani's quarry), Italy), 1970 (Japan)

Locality list: 2 localities of pollucite

• Cs₂Al₂Si₄O₁₂,2H₂O
• (Cs,Na)₂Al₂Si₄O₁₂,2H₂O
• [Cs⁺₂][(AlSi₂O₆)₂]^2-,2H₂O

• Class: Analcime group < Zeolite family
• Class: Tecto-Aluminosilicate - Zeolitic water
• Soluble in: HCl (Decompose)
• Fluorescence: UV excitation (Yellow, Rarely)
• Radioactive: Very weak

• Cs => Na: Analcime (Series)
• Cs => Ca: Wairakite

• Color: Colorless
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Habit: Massive

• Cleavage: No
• Hardness: 6.5
• Density: 2.9

• System: Cubic
• Group: m3m, Ia3d
• Lattice: a=13.7