Rare Earth Elements in Mineral Deposits: Speciation in Hydrothermal Fluids and Partitioning in Calcite

Table 1

Trace element compositions in calcite from natural carbonatite systems.

; deposit type	Element (ppm)
		La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu
Bear Lodge^1, WY; carbonatite	Hydrothermal	1.22	9.66	3.55	36.97	58.22	32.25	126.66	30.98	185.55	31.72	65.97	6.46	27.36	2.71
Bear Lodge^1, WY; carbonatite	Hydrothermal	2.82	14.78	4.47	38.16	53.78	34.67	130.40	32.05	209.75	36.91	80.54	8.71	32.45	2.77
Bear Lodge^1, WY; carbonatite	Hydrothermal	7.44	37.78	9.30	68.10	53.41	24.98	88.25	16.78	96.66	16.43	39.46	5.15	33.76	4.45
Bear Lodge^1, WY; carbonatite	Magmatic	609.20	725.65	69.95	197.35	21.92	4.72	9.61	0.87	2.75	0.34	0.53	0.05	0.18	d.l.
Kerimasi^2, Tanzania; carbonatite	Magmatic	129.07	157.90	13.42	44.03	8.37	2.47	5.76	0.88	3.12	0.76	2.45	0.19	1.65	d.l.
Kerimasi^2, Tanzania; carbonatite	Magmatic	132.98	128.15	15.00	55.63	8.31	2.35	8.56	0.64	5.33	0.97	3.41	d.l.	1.86	0.24

References: ¹Olinger (2012) [31]; ²Chakhmouradian et al. (2016) [32]; d.l. = below detection limit.