Tschörtnerite (blue; with needle-like, unknown zeolite crystals) Field of view: 2 mm Locality: Caspar quarry, Bellerberg volcano, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany — Photo: Henk Smeets – tomeikminerals.com · CC BY 4.0
Tschörtnerite
Tschörtnerite is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₄(K,Ca,Sr,Ba)₃Cu₃Al₁₂Si₁₂O₄₈(OH)₈·20H₂O.
It crystallizes in the cubic crystal system (space group Fm3m).
IMA symbol Tht, IMA status: approved, named in 1995.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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