Optical Spectra of Osumilite-(Mg), KMg₂Al₃(Al₂Si₁₀)O₃₀

• Goldman DS, Rossman GR (1978) The site distribution of iron and anomalous biaxiality in osumilite. American Mineralogist 63, 490-498,
• Taran MN, Rossman GR (2001) Optical spectroscopic study of tuhualite and a re-examination of the beryl, cordierite, and osumilite spectra. American Mineralogist 86, 973-980.