| Sample Number | 08RN518B |
|---|---|
| Project | Alaska highway, gas pipeline, and infrastructure corridors |
| Reference Number | FA08153362, FA09137544 |
|---|---|
| Reference Date | 2009-04-01 |
| Citation | RDF 2014-4 |
| Laboratory | ALS Minerals |
| Laboratory Number | 2008RN518B |
| Description | All rock samples were crushed by ALS with a Terminator oscillating jaw crusher with chrome steel alloy plates so that at least 70 percent of the material passed through a -10 mesh (2 mm) screen. Representative aliquots of 250 grams and 30 grams each were taken using a stainless steel riffle splitter. These samples were then pulverized in a chrome steel ring mill so that 85 percent of the sample passed through a -200 mesh (75 micron) screen. All trace-element geochemical analyses and whole rock analyses were performed using representative splits of each 250-gram pulp, except gold, platinum, and palladium analyses, which were performed on a 30-gram representative split. For the whole-rock analyses, major- and minor-element oxides were determined by ALS using X-ray fluorescence spectrometry following a lithium borate fusion. In order to check reported major- and minor-element oxide and trace-element values, DGGS inserts well-characterized rock standards in each laboratory batch throughout the sample order. Standards are checked by DGGS to make sure they fall within 2 standard deviations of accepted values, and if not, all samples in the batch are reanalyzed. |
| Sample Type | rock |
| Reference Number | rdf2014-4-pp-xrf |
|---|---|
| Reference Date | 2008-04-01 |
| Citation | RDF 2014-4 |
| Laboratory | Advanced Instrumentation Laboratory at the University of Alaska Fairbanks - Newberry, R.J. |
| Description | All rock samples were crushed by ALS with a Terminator oscillating jaw crusher with chrome steel alloy plates so that at least 70 percent of the material passed through a -10 mesh (2 mm) screen. Representative aliquots of 250 grams and 30 grams each were taken using a stainless steel riffle splitter. These samples were then pulverized in a chrome steel ring mill so that 85 percent of the sample passed through a -200 mesh (75 micron) screen. All trace-element geochemical analyses and whole rock analyses were performed using representative splits of each 250-gram pulp, except gold, platinum, and palladium analyses, which were performed on a 30-gram representative split. Selected trace-element values (Ba, Nb, Rb, Sr, Y, and Zr) were determined by X-ray fluorescence spectrometry on a pressed pellet. |
| Sample Type | rock |