Description
DOWNLOAD AMIS CERTIFICATE (PDF)
Origin of Material
This standard was made from material supplied from porphyry tin exploration projects in Bolivia. Tin is hosted in high-level to subvolcanic felsic intrusives that have been subjected to pervasive sericitic alteration.
Recommended Concentrations and two “Between Laboratory” Standard Deviations
Certified Concentrations
| Tin | 0.27 ± 0.026 % | Sn (XRF) |
| Zinc | 352 ± 42 ppm | Zn (other methods) |
| Specific Gravity | 2.74 ± 0.22 gm/cc | Gas pycnometer |
Provisional Concentrations
| Tin | 0.29 ± 0.043 % | Sn (other methods) |
| Copper | 54 ± 7.9 ppm | Cu (other methods) |
Indicated Mean
| Silver | 11 ppm | Ag (other methods) |
Please download the certificate for additional information
