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Pyrope [abbr. Prp ]

Year of discovery: 1803 (Czech), 1937 (Japan)

Locality list: 14 localities of pyrope

• Mg₃Al₂(SiO₄)₃
• [Mg²⁺₃][Al³⁺₂][(SiO₄)₃]^12-

• Class: Pyralspite subgroup < Garnet group < Garnet supergroup
• Class: Nesosilicate
• Insoluble in: HCl

• Mg => Fe: Almandine (Series)
• Mg => Mn: Spessartine (Series)
• Mg => Ca: Grossular (Series)

• Al => Cr: Knorringite (Series)
• Al => Fe: Majorite (Series)

• Color: Red, Brown
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Habit: Tetracosahedron, Dodecahedron

• Cleavage: No
• Hardness: 7.5
• Density: 3.7

• System: Cubic
• Group: m3m, Ia3d
• Lattice: a=11.5

Etymology: Pyr (Fire) in Greek