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Mascagnite

Year of discovery: 1779 (Travale, Italy), 1967 (Japan)

Locality list: A locality of mascagnite

• (NH₄)₂SO₄
• [(NH₄⁺)₂][SO₄]^2-

• Class: Ammonium - Sulfate
• Soluble in: Water
• Deliquescent (slightly)

• NH₄ => K: Arcanite (Series)

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

• Cleavage: Good on {100} (1 plane)
• Hardness: 2-2.5
• Density: 1.8

• System: Orthorhombic
• Group: mmm, Pnma
• Lattice: a=7.8, b=6.0, c=10.6