Rogermitchellite
Rogermitchellite is an IMA-recognized mineral species in the silicate class, with the chemical formula Na₆Sr₁₂Ba₂Zr₁₃Si₃₉B₆O₁₂₃(OH)₁₄·10H₂O.
It crystallizes in the hexagonal crystal system (space group P-3c1).
Key properties: Mohs hardness 5; specific gravity 3.34; White streak; Vitreous luster; optically uniaxial.
IMA symbol Rmt, IMA status: approved, named in 2003.
Found in vugs in late-stage igneous breccia in an alkaline igneous complex.
It is found associated with Aegirine, annite, galena, a labuntsovite-group mineral, maganoneptunite, microcline, pyrrhotite, sodalite, zircon.
The mineral was named to honor Roger Howard Mitchell (b. 1941), Department of Geology, Lakehead University, Thunder Bay, Ontario, Canada.
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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