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Getchellite

Year of discovery: 1965 (Getchell mine, USA), 1970 (Japan)

Locality list: A locality of getchellite

• AsSbS₃
• [As³⁺][Sb³⁺][S₃]^6-

• Class: Orpiment group
• Class: Sulfide

• Sb => As: Orpiment

• Color: Dark red
• Tarnish: Greenish-Purplish iridescent
• Streak: Orange
• Luster: Resinous
• Diaphaneity: Transparent-Translucent

• Habit: Granular

• Cleavage: Perfect on {001} (1 plane)
• Hardness: 1.5-2
• Density: 3.9

• System: Monoclinic
• Group: 2/m, P2₁/a
• Lattice: a=11.9, b=9.0, c=10.2, β=116.5

Etymology: Getchell mine, Nevada, USA, where this mineral was discovered for the first time.