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Wardite

Year of discovery: 1896 (Clay Canyon, USA), 2014 (Japan)

Locality list: A locality of wardite

• NaAl₃(PO₄)₂(OH)₄,2H₂O
• [Na⁺][Al³⁺₃][(OH)₄|(PO₄)₂]^10-,2H₂O

• Class: Phosphate - Hydroxide - Hydrate
• Soluble in: HCl (Difficult), HNO₃ (Difficult), H₂SO₄ (Difficult)

• Al => Fe: Cyrilovite

• OH => F: Fluorowardite

• 2H₂O => []: Brazilianite

• NaAl => CaMg: Angastonite

• Color: Colorless, Pale green
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Opaque

• Cleavage: Perfect on {001} (1 plane)
• Hardness: 5
• Density: 2.8

• System: Tetragonal
• Group: 422, P4₁2₁2
• Lattice: a=7.0, c=19.0