Baylissite
Baylissite is an IMA-recognized mineral species in the carbonate class, with the chemical formula K₂Mg(CO₃)₂·4H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/a).
Key properties: Mohs hardness 2–3; specific gravity 2.06; optically biaxial.
IMA symbol Byl, IMA status: approved, named in 1975.
Found as a secondary mineral in fractures in aplite granite and granodiorite.
It is found associated with Grimselite, schröckingerite, calcite, monohydrocalcite.
The mineral was named to honor Noel Stanley Bayliss, Professor of Chemistry, University of Western Australia, Nedlands, Western Australia, who characterized the synthetic compound.
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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