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Strontianite [abbr. Str ]

Year of discovery: 1791 (Strontian, UK), 1915 (Japan)

Locality list: 11 localities of strontianite

• SrCO₃
• [Sr²⁺][CO₃]^2-

• Class: Aragonite group
• Class: Carbonate
• Soluble in: HCl (with bubbles)
• Fluorescence: UV excitation (Bluish green-Pale red), Phosphorescence, Thermoluminescence (Some examples), Cathodo luminescence
• Alters to Celestine.
• Formed by alteration of Celestine.

• Sr => Ca: Calcite, Aragonite, Vaterite
• Sr => Mn: Rhodochrosite
• Sr => Mg: Magnesite
• Sr => Fe: Siderite
• Sr => Cd: Otavite
• Sr => Zn: Smithsonite
• Sr => Ni: Gaspéite (Gaspeite)
• Sr => Co: Spherocobaltite
• Sr => Ba: Witherite
• Sr => Pb: Cerussite
• Sr => Na₂: Gregoryite

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

• Habit: Acicular

• Cleavage: Perfect on {110} (2 planes), Poor on {021} and {010} (3 planes)
• Hardness: 3.5
• Density: 3.8

• System: Orthorhombic
• Group: mmm, Pmcn
• Lattice: a=5.1, b=8.4, c=6.0

Etymology: Strontian in southern Scotland, UK