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Li 2.72% Ta 310ppm Sn 759ppm Pegmatite BR

Category: BASE METALS 
Product Code: AMIS 0663

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AMIS0663 Li 2.72% Ta 310ppm Sn 759ppm Pegmatite Brazil

Origin of Material

Materials made using ore sourced from the Volta Grande mine was provided by AMG Mineração S.A. (“MIBRA”),a subsidiary of AMG Advanced Metallurgical Group N.V. It is from the Volta Grande tantalum, niobium, and tin mine (“Volta Grande”) in Minas Gerais state, Brazil. AMG Mineração produces Spodumene Concentrate, Tanttalum Concentrate, Tin in ingots, Feldspar and Abite. The sample of spodumene concentrate was produced by flotation, after magnetic separation. The milled pegmatite was processed in a magnetic separator, to remove iron minerals, mainly silicates. The non magnetic pegmatite was floated (rougher, cleaner and recleaner).

Approximate Mineral and Chemical Composition

The Volta Grande pegmatites occur in the Archaean Barbacena greenstone belt on the Southern border of the São Francisco craton. The Volta Grande pegmatites form six sub-horizontal tabular bodies characterized by coarse to very coarse-grained spodumene, quartz, albite, microcline and muscovite. The predominant lithium mineral is spodumene.


Recommended Concentrations and Limits
(at two Standard Deviations)
Certified Concentrations


Analyte Method Certified (µ) (2s) ± Unit
Li 4A_MICP 2.72 0.28 %
Ta FUS 310 29 ppm
Nb 4A_MICP 40 6 ppm
Nb FUS 40 9 ppm
As 4A_MICP 3 1 ppm
Sb 4A_MICP 4 0.8 ppm
Sb FUS 4 0.9 ppm
Sn FUS 759 62 ppm
F SIE 2084 325 ppm
S 4A_MICP 0.029 0.002 %
SG SG 3.15 0.20 Dimensionless
Ba 4A_MICP 31 2 ppm
Be 4A_MICP 374 78 ppm
Bi 4A_MICP 4 0.8 ppm
Ca 4A_MICP 1.31 0.14 %
Ca XRF 1.32 0.036 %
Cs 4A_MICP 140 22 ppm
Cu 4A_MICP 32 5 ppm
Fe 4A_MICP 1.22 0.09 %
Fe FUS 1.26 0.07 %
Ga 4A_MICP 138 10 ppm
Hf 4A_MICP 8 2 ppm
K 4A_MICP 5425 334 ppm
K FUS 5138 765 ppm
K XRF 5291 111 ppm
Lu 4A_MICP 0.07 0.03 ppm
Mn 4A_MICP 1146 100 ppm
Mo 4A_MICP 2 0.3 ppm
Na 4A_MICP 5732 494 ppm
Ni 4A_MICP 19 4 ppm
P 4A_MICP 2543 198 ppm
Pb 4A_MICP 36 4 ppm
Si FUS 29.13 0.96 %
Si XRF 28.90 0.28 %
Tb 4A_MICP 1 0.4 ppm
Te 4A_MICP 0.1 0.05 ppm
Ti 4A_MICP 596 27 ppm
Tl 4A_MICP 11 0.8 ppm
V 4A_MICP 15 2 ppm
W 4A_MICP 2 0.3 ppm
Yb 4A_MICP 0.529 0.2 ppm
Zn 4A_MICP 98 14 ppm
Zr 4A_MICP 41 5 ppm

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