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Fluellite

Year of discovery: 1824 (Stenna Gwyn mine, UK), 1963 (Japan)

Locality list: 2 localities of fluellite

• Al₂PO₄(OH)F₂,7H₂O
• [Al³⁺₂][OH|F₂|PO₄]^6-,7H₂O

• Class: Phosphate - Hydroxide - Fluoride - Hydrate
• Insoluble in: HCl
• Fluorescence: Long UV excitation (Pale yellow)

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

• Cleavage: Indistinct on {010} and {111} (5 planes)
• Hardness: 3
• Density: 2.2

• System: Orthorhombic
• Group: mmm, Fddd
• Lattice: a=11.2, b=21.2, c=8.5