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Kernite

• Na₂B₄O₆(OH)₂,3H₂O
• [Na⁺₂][(HB₂O₄)₂]^2-,3H₂O

• Class: Ino-Borate - Hydrate
• Soluble in: Water, HCl, HNO₃, H₂SO₄
• Dehydrate to Tincalconite.

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

• Habit: Long prismatic

• Cleavage: Perfect on {100} (1 plane), Good on {001} (1 plane), Distinct on {201} (1 plane)
• Hardness: 2.5
• Density: 1.9

• System: Monoclinic
• Group: 2/m, P2₁/c
• Lattice: a=7.0, b=9.2, c=15.7, β=108.9