Table 2 in The Tumbarumba Basaltic Gem Field, New South Wales: In Relation to Sapphire-Ruby Deposits of Eastern Australia

Table 2. Geochemical trace element ranges (wt%), Tumbarumba corundums. typedescriptionFe 2 O 3TiO 2Ga 2 O 3Cr 2 O 3 V 2 O 3Type 1A*blue, green ± yellow, white, colour zoned1–20.02–0.150.02–0.035<0.005 <0.01Type 1B*blue, green ± yellow, white, colour zoned1.0–2.10.01–0.350.020–0.040<0.01 <0.01Type 2opaque, blue, dark trapiche-like silk1–20.08–0.210.015–0.030<0.01–0.03 <0.01–0.015Type 3blue, green, pink, diffuse zoned0.8–1.50.01–0.220.015–0.0250.01–0.04 <0.01–0.015Type 4blue, light blue, white colour zoned0.40–0.650.07–0.240.01–0.0250.015–0.035 0.01–0.03Type 5dark pink, purple redlow Fe0.060.10.020.25 0.02high Fe0.70.050.0050.15 <0.005 * Type 1A and 1B show different Fe colour absorption patterns (see text). Type 1A (15 specimens, CORTUM 13,23,27,30,31,36,37,38,48,56,64,65,66,67,68) Type 1B (14 specimens, CORTUM 10,12,21,22,39,40,41,42,43,50,60,69,71,72) Type 2 (8 specimens, CORTUM 15,16,17,18,19,57,58,59) Type 3 (19 specimens, CORTUM 4,5,6,7,8,9,11,14,20,24,32,33,34,51,52,53,54,55,63) Type 4 (6 specimens, CORTUM 1,2,3,25,46,70) Type 5 (2 specimens, CORTUM 44,45)