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Ulexite

• NaCaB₅O₆(OH)₆,5H₂O
• [Na⁺][Ca²⁺][H₆B₅O₁₂]^3-,5H₂O

• Class: Cyclo-Borate
• Soluble in: hot Water (Decompose)
• Insoluble in: HCl
• Fluorescence: UV excitation (Pale yellow)

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

• Habit: Acicular

• Cleavage: Perfect on {010} (1 plane), Good on {110} (2 planes)
• Hardness: 2.5
• Density: 2.0

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=8.8, b=12.9, c=6.7, α=90.3, β=109.1, γ=105.1

Synonym: TV stone, Television stone