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Sulphur (Photo), Sulfur (US spelling)

Year of discovery: Prehistoric (World), 713 (Japan)

Locality list: 627 localities of sulphur

• S
• α-[S₈]

• Class: Sulphur Polymorph group
• Class: Native elements
• Variety: Selensulphur (+Se, Orange)
• Insoluble in: HCl
• Magnetism: Diamagnetic
• Electrical: Electrostatic (Rubbed, Negative)
• Phase transition: Transit to β-Sulphur above 95.4 degree.
• Phase transition: Formed on transition of β-Sulphur in some weeks at ambient condition.
• Phase transition: Formed on transition of Rosickýite (Rosickyite) at ambient condition.
• Paramorph: Replace β-Sulphur.
• Combustible

• Polymorph: Rosickýite (Rosickyite) (γ, Monoclinic), β-Sulphur (Monoclinic, high temperature)

• Color: Yellow
• Streak: Colorless
• Luster: Resinous
• Diaphaneity: Transparent-Translucent

• Habit: Dipyramidal by {111}, thick tabular
• Aggregate: Reniform, stalactitic
• Twin: {101},{011},{110}

• Cleavage: Imperfect on {001}, {110}, and {111} (5 planes)
• Hardness: 1.5-2.5
• Density: 2.1

• System: Orthorhombic
• Group: mmm, Fddd
• Lattice: a=10.5, b=12.9, c=24.5

Etymology: Sulfur in Latin

Synonym: Native sulphur, Native sulfur