Perovskites - Rare Earth Elements in Ultramafic and Mafic Rocks and their Minerals - page 198

Table 7.1 REE compositions of perovskites from kimberlites, olivine nephelinites, kamafugites, and carbonatites from some provinces (ppm).

South Africa South India

Meimecha-Kotuy
prov. (Russia)
[data Yu.
Vasiliev]

Wesselton
province

Premier
pipe Benfontein sill

[Jones, Wyllie, 1984], WDS [Chalapathi et al., 2004], WDS

Bnf-1 Bnf-2 WM-3 PM-5 P3 P4 P4a CH10 P11/2C KK10 NP PD/2 PD/2a Vas-1 Vas-2

Olivine
nephelinites Element Kimberlites

La 8842 8024 7478 2729 9590 7360 7040 4590 5210 2600 3800 2620 3060 6100 6100

Ce 26066 25169 24162 6805 22800 17490 19380 9170 12380 6680 7570 4050 5670 14200 14200

Pr 2914 2803 2862 530 2820 2440 1520 2440 2850 660 440 210 620 2400 2400

Nd 10811 10537 11077 2589 9590 6690 7110 4620 4770 2980 3090 2520 2130 6400 6400

Sm 1207 1362 1267 345 1040 850 700 480 420 190 220 100 170 6100 6100

Gd 650 755 729 165 60 140 650 740 60 280 530 370 260 1140 1240

Total 49840 47895 46846 12998 45840 34830 35750 21300 25630 13110 15120 9500 11650 36340 36440

(La/Sm) n 4,98 5,81 5,45 6,33 6,02 7,81 8,62 10,9 16,5 11,3 4,98 5,81 5,45 0,63 0,63

(La/Ce) n 0,88 0,83 0,81 1,05 1,10 1,10 0,95 1,31 1,10 1,02 1,31 1,69 1,41 1,12 1,12

( Continued )