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Dachiardite-K

Year of discovery: 2017 (Zvezdel paleovolcanic compolex, Bulgaria)

• K₂CaAl₄Si₂₀O₄₈,13H₂O
• (K₂,Ca,K₂)₂Al₄Si₂₀O₄₈,13H₂O
• [K⁺₂Ca²⁺][(AlSi₅O₁₂)₄],13H₂O

• Class: Dachiardite series < Mordenite group < Zeolite family
• Class: Tecto-Aluminosilicate - Zeolitic water
• Radioactive: Very weak

• K₂ => Ca: Dachiardite-Ca
• K₂Ca => Na₄: Dachiardite-Na

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

• Cleavage: Perfect on {100} (1 plane)
• Hardness: 4
• Density: 2.2

• System: Monoclinic
• Group: 2/m, C2/m, Cm, C2
• Lattice: a=18.7, b=7.5, c=10.2, β=107.8