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Fibroferrite

Year of discovery: 1833 (Tierra Amarilla, Chile), 1954 (Japan)

Locality list: A locality of fibroferrite

• FeSO₄(OH),5H₂O
• [Fe³⁺][OH|SO₄]^3-,5H₂O

• Class: Sulfate - Hydroxide - Hydrate
• Soluble in: Water (Brown Fe oxide residue)

• Fe => Al: Jurbanite

• Color: Pale yellow, Grayish green, Yellowish green
• Streak: White
• Luster: Silky

• Cleavage: Perfect on {001} (1 planes)
• Hardness: 2-2.5
• Density: 1.9

• System: Monoclinic, Pseudotrigonal
• Group: (-3), R(-3)
• Lattice: a=24.1, c=7.6