Walkerite
Walkerite is an IMA-recognized mineral species in the halide class, with the chemical formula Ca₁₆(Mg,Li)₂[B₁₃O₁₇(OH)₁₂]₄Cl₆·28H₂O.
It crystallizes in the orthorhombic crystal system (space group Pba2).
Key properties: Mohs hardness 3; specific gravity 2.07; White streak; Vitreous luster; optically biaxial.
IMA symbol Wk, IMA status: approved, named in 2001.
Found in a marine evaporite deposit.
It is found associated with Halite, hydroboracite, boracite, hilgardite, volkovskite, szaibelyite, anhydrite.
The mineral was named to honor Canadian geologist Thomas Leonard Walker (1867-1942) for his contributions to mineralogy in general and to the study of borates from the Minas Basin, Nova Scotia.
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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