Gottardiite
Gottardiite is an IMA-recognized mineral species in the silicate class, with the chemical formula Na₃Mg₃Ca₅Al₁₉Si₁₁₇O₂₇₂·93H₂O.
It crystallizes in the orthorhombic crystal system (space group Cmca).
IMA symbol Gtt, IMA status: approved, named in 1994.
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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