• Published 2004

Rengeite , Sr 4 ZrTi 4 Si 4 O 22 , a new mineral , the Sr-Zr analogue of perrierite from the Itoigawa-Ohmi district , Niigata Prefecture , central Japan

@inproceedings{H2004RengeiteS,
  title={Rengeite , Sr 4 ZrTi 4 Si 4 O 22 , a new mineral , the Sr-Zr analogue of perrierite from the Itoigawa-Ohmi district , Niigata Prefecture , central Japan},
  author={H. and Miyajima and Sabad-e-Gul and Matsubara and C Robert and Miyawaki and K. and Yokoyama and Hirokawa},
  year={2004}
}
Rengeite, Sr4ZrTi4Si4O22, is a new member of the perrierite–chevkinite group found in the jades from the Itoigawa-Ohmi district, central Japan. It is monoclinic, P21/a, a = 13.97(1), b = 5.675(7), c = 11.98(1) Å, b = 114.26(8)8, V = 866 Å and Z = 2. The six strongest lines in the X-ray powder diffraction pattern are 3.12 (s) (40-3), 3.05 (vvs) (31-3), 2.99 (vs) (311), 2.84 (s) (020), 2.74 (s) (004), 2.20 (s) (31-5). Electron microprobe analysis gave SiO2 22.58, TiO2 29.88, ZrO2 9.49, Nb2O5 0.24… CONTINUE READING

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