Colorless tabular plates of the very rare new mineral günterblassite (IMA 2011-032) from the type and only known locality worldwide (Rother Kopf, Roth, Eifel Mountains, Germany). — Photo: David Hospital · CC BY-SA 4.0
Günterblassite
Günterblassite is an IMA-recognized mineral species in the silicate class, with the chemical formula (K,Ca,Ba,Na, )₃Fe[(Si,Al)₁₃O₂₅(OH,O)₄]·7H₂O.
It crystallizes in the orthorhombic crystal system (space group Pnm2_1). It is a member of the Günterblassite structural group.
IMA symbol Gbl, IMA status: approved, named in 2011.
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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