Note 52 — Chapter II · THE SILICATES
Reading edition
Beiträge zur Mineralogie von Japan, 1906, 2, 23.
[53] An earlier analysis (Abstr. Chem. Soc. 1905, 88, [ii.], 177) gave over 20 per cent. of uranous oxide, UO₂; the greater part of this appears to have been zirconia, ZiO₂.