Julgoldite-(Mg)
Julgoldite is a member of the pumpellyite mineral series, a series of minerals characterized by the chemical bonding of silica tetrahedra with alkali and transition metal cations. Julgoldites, along with more common minerals like epidote and vesuvianite, belong to the subclass of sorosilicates, the rock-forming minerals that contain SiO4 tetrahedra that share a common oxygen to form Si2O7 ions with a charge of 6− (Deer et al., 1996).
Intro adapted from Wikipedia (CC BY-SA).
Julgoldite-(Mg) is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₂MgFe³⁺₂(Si₂O₇)(SiO₄)(OH)₂·H₂O.
It is a member of the Pumpellyite structural group.
IMA symbol Jul-Mg, IMA status: approved, named in 1972.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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