Tetragonal phase of Mg3Al2Si3O12 (TAPP-phase) 

Mineral name:  jeffbenite

Discovery:  Sao Liuz, Brazil (diamond inclusion) (named after Jeffrey W. Harris and Ben Harte)

＊References＊

• Harris J., Hutchison M. T., Hursthouse M., Light M., and Harte B. 1997. Nature 387:486–488. (Discovery)

• Finger L. W. and Conrad P. G. 2000. American Mineralogist 85:1804–1807.（Reevaluation of crystal structure) 

• Gasparik T. and Hutchison M. T. 2000. Earth and Planetary Science Letters 181:103–114. (Hypothetical stability field of TAPP phase is proposed.)

• Brenker F. E., Stachel, T., and Harris J. W.  2002. Earth and Planetary Science Letters 198 1–9. (TEM study)

• Armstrong L. S. and Walter M. J. 2012. European Journal of Mineralogy 24:587–597. (First synthesis of TAPP phase)

• Nestola F., Burnham A., Peruzzo L., Tauro L., Alvaro M., Walter M. J., Gunter M., Anzolini C., and Kohn S. C. 2016. Mineralogical Magazine 80:1219–1232. (Described as a new mineral species)

Tetragonal garnet-type  Fe3Al2Si3O12 

Mineral name:  unnamed

Discovery:  Shergotty meteorite (shergottite)

＊References＊

• Ma C. and Tschauner O. 2016. Meteoritics & Planetary Science 51:6124.pdf. (Discovery)