Description
DOWNLOAD AMIS CERTIFICATE (PDF)
Origin of Material
The locality is Uis Tin Mine, Namibia. The material is from the V1/V2 pegmatite of the Uis pegmatite Swarm, Cape Cross-Uis pegmatite belt. The material was blended with high grade cassiterite material to obtain the required grade.
Approximate Mineral and Chemical Composition
The material is pegmatitic or, better yet, granitic. The dominant mineralogy includes:
Plagioclase, orthoclase, perthite, microcline (feldspars), muscovite and quartz. I would say that these minerals make up about 98% of the modal abundance. Accessory mineralogy may include: Apatite, cassiterite, columbite-group minerals, tourmaline, petalite, amblygonite, cookite, beryl, lepidolite, zircon, monazite. Other secondary phases which are generally precipitates in fractures within the pegmatites are Fe-Mn-oxides (some weird mineral that constitutes both Fe and Mn) and calcite. Hematite may also be present in fractures and alteration zones as well as some primary occurrences.
Certified Concentrations
Sn FUS 3427 275ppm
Li 4A_MICP 2663 91ppm
Li FUS 2653 233ppm
Rb 4A_MICP 1098 122ppm
Rb FUS 1168 134ppm
Rb FUSA 1223 95ppm
Ta FUS 128 16ppm
Ta FUSA 152 31ppm
LOI LOI 3.31 0.44%
SG SG 2.69 0.19Dimensionless
Al FUS 9.29 0.94%
Al FUSA 8.95 0.38%
As 4A_MICP 7 1ppm
Ba FUS 44 7ppm
Ba FUSA 49 4ppm
Be FUS 179 18ppm
Be FUSA 195 12ppm
Bi 4A_MICP 2 0.5ppm
Bi FUS 2 0.7ppm
Ca 4A_MICP 9969 920ppm
Ca FUS 9992 1092ppm
Cd 4A_MICP 5 2ppm
Co 4A_MICP 4 1ppm
Cs 4A_MICP 35 7ppm
Cs FUS 34 6ppm
Cu 4A_MICP 82 4ppm
Fe FUS 3656 370ppm
Ga 4A_MICP 36 7ppm
Ga FUSA 39 3ppm
Hf 4A_MICP 1 0.3ppm
K 4A_MICP 1.67 0.17%
K FUS 1.71 0.21%
Mn 4A_MICP 294 50ppm
Mo 4A_MICP 0.9 0.2ppm
Na 4A_MICP 2.37 0.28%
Nb FUSA 131 38ppm
Ni 4A_MICP 11 1ppm
Pb FUS 358 38ppm
Pb FUSA 348 26ppm
S FUSA 0.1 0.02%
Sb 4A_MICP 0.8 0.1ppm
Sb FUS 0.8 0.4ppm
Si FUS 32.03 0.77%
Sr 4A_MICP 459 41ppm
Sr FUS 473 80ppm
Tl 4A_MICP 9 1ppm
Tl FUS 9 1ppm
Tl FUSA 9 1 ppm
U FUS 14 4ppm
Zn 4A_MICP 1580 169ppm
Zn FUSA 1622 145ppm
Zr 4A_MICP 12 4ppm
Major Oxides
Al2O3 FUS 17.52 1.8%
Al2O3 FUSA 16.91 0.74%
Al2O3 XRF 17.75 1.8%
BaO FUSA 0.005 0.0005%
CaO FUS 1.34 0.19%
CaO XRF 1.38 0.055%
Fe2O3 FUS 0.52 0.05 %
Fe2O3 XRF 0.50 0.04%
K2O FUS 2.07 0.25%
K2O XRF 2.02 0.11%
MnO XRF 0.042 0.01%
Na2O XRF 3.21 0.081%
Nb2O5 FUSA 0.02 0.005%
Pb3O4 FUSA 0.04 0.003%
Rb2O FUSA 0.1 0.01%
SiO2 FUS 68.27 2.0%
SiO2 XRF 67.98 2.2%
SrO FUS 0.058 0.004%
Ta2O5 FUSA 0.02 0.004%
ZnO FUSA 0.2 0.02%
