Hutcheonite
Hutcheonite is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₃Ti₂(SiAl₂)O₁₂.
It crystallizes in the cubic crystal system (space group Ia3d). It is a member of the Garnet structural group.
Key properties: specific gravity 3.86.
IMA symbol Htn, IMA status: approved, named in 2013.
A secondary phase, apparently formed by iron-alkali-halogen metasomatic alteration of primary CAI phases like melilite, perovskite, and Ti-Al-diopside.
It is found associated with Monticellite, grossular, wadalite.
The mineral was named to honor Ian D. Hutcheon (b. 1947), a cosmochemist at Lawrence Livermore National Laboratory, Livermore, California, USA.
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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