Table 1 in The Tumbarumba Basaltic Gem Field, New South Wales: In Relation to Sapphire-Ruby Deposits of Eastern Australia

Table 1. Ferrocolumbite inclusion and sapphire analyses, sapphire (S2), Tumbarumba gem field. wt% oxidecrystal 1crystal 2crystal 3host sapphireTiO24.434.564.120.01Al2O30.040.060.0399.49Cr2O30.000.000.02FeO12.8412.6512.750.97MnO5.415.595.76MgO0.880.910.88CaO0.030.040.02ZrO21.231.440.96Nb2O573.1872.3372.930.07Ta2O51.711.201.59ThO20.11SiO2 0.01total99.7598.7899.17100.55cations (based on 6 oxygens, and partitioning of FeO to FeO/Fe2O3)Ti0.18430.19080.1725Al0.00250.00370.0017Cr0.00000.00000.0011Fe2+0.59420.56230.5712Fe3+0.00000.02600.0219Mn0.25350.26350.2714Mg0.07220.07540.0732Ca0.00150.00240.0011Zr0.03300.03910.0259Nb1.83041.81861.8345Ta0.02570.01820.0241Th0.00000.00000.0014total2.99733.00003.0000 1 (Fe0.59 Mn0.25 Mg0.07)0.91 (Nb1.83 Ta0.03 Ti0.18 Zr0.03)2.07O6 2 (Fe0.59 Mn0.26 Mg0.08)0.93 (Nb1.82 Ta0.02 Ti0.19 Zr0.04)2.07O6 3 (Fe0.59 Mn0.27 Mg0.07)0.93 (Nb1.83 Ta0.02 Ti0.17 Zr0.03)2.05O6 Analyst: R.R. Coenraads.