| Field | Value |
|---|---|
| Lab ID | CHA436 |
| Field ID | 3200 |
| Job ID | 12863 |
| Sample submitter | Cathrall, John B., Antweiler, John C., and Tripp, Richard B. |
| Project name | Alaska Gold Deposits |
| Date submitted | 3/5/1985 0:00:00 |
| Country | United States |
| State | AK |
| Map quadrangle | Tanana |
| Geographic latitude | 65.17972 |
| Geographic longitude | -150.33362 |
| loc_desc | Omega Ck, Lloyd Hubbard |
| Sample source | stream sediment |
| Collection method | grab/single |
| Primary media type | concentrate |
| Secondary media type | panned |
| Sample media name | C3 fraction |
| Precursor rock | placer |
| Sample preparation method | -30 HMC, bromoform @ 2.85 SG, modified Frantz ~ 0.7 amp w 5° slope & 10° tilt |
| Sieve size | -30 mesh |
| Lab ID | CHA436 |
| Arsenopyrite | present |
| Gold | abundant |
| Pyrite | 90% |
| Scheelite | present |
| Ore mineral comments | SLF mostly PYR |
| (click for info) | |
| Geologic map unit | -150.33362, 65.17972 |
| Nearby scientific data | Find additional scientific data near this location |
| Element | Measured value | Units of measure | Analytical method |
|---|---|---|---|
| Beryllium | <2 | parts per million by weight | ES_SQ |
| Boron | 20 | parts per million by weight | ES_SQ |
| Magnesium | 0.2 | percent by weight | ES_SQ |
| Calcium | 0.15 | percent by weight | ES_SQ |
| Titanium | 0.3 | percent by weight | ES_SQ |
| Vanadium | 50 | parts per million by weight | ES_SQ |
| Chromium | 30 | parts per million by weight | ES_SQ |
| Manganese | 0.02 | percent by weight | ES_SQ |
| Iron | 20 | percent by weight | ES_SQ |
| Cobalt | 200 | parts per million by weight | ES_SQ |
| Nickel | 700 | parts per million by weight | ES_SQ |
| Copper | 700 | parts per million by weight | ES_SQ |
| Zinc | 700 | parts per million by weight | ES_SQ |
| Arsenic | 500 | parts per million by weight | ES_SQ |
| Strontium | <200 | parts per million by weight | ES_SQ |
| Yttrium | 300 | parts per million by weight | ES_SQ |
| Zirconium | 2000 | parts per million by weight | ES_SQ |
| Niobium | <50 | parts per million by weight | ES_SQ |
| Molybdenum | <10 | parts per million by weight | ES_SQ |
| Silver | 200 | parts per million by weight | ES_SQ |
| Cadmium | <50 | parts per million by weight | ES_SQ |
| Tin | <20 | parts per million by weight | ES_SQ |
| Antimony | <200 | parts per million by weight | ES_SQ |
| Barium | 500 | parts per million by weight | ES_SQ |
| Lanthanum | 2000 | parts per million by weight | ES_SQ |
| Tungsten | 150 | parts per million by weight | ES_SQ |
| Gold | 1000 | parts per million by weight | ES_SQ |
| Lead | 1000 | parts per million by weight | ES_SQ |
| Bismuth | 30 | parts per million by weight | ES_SQ |
| Thorium | <200 | parts per million by weight | ES_SQ |
| Element | Value | Units | Technique | Digestion | Decomposition | Laboratory |
|---|---|---|---|---|---|---|
| Beryllium | N2 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Boron | 20 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Magnesium | 0.2 | pct | ES | T | semi-quant 6-step ES | USGS-BEG |
| Calcium | 0.15 | pct | ES | T | semi-quant 6-step ES | USGS-BEG |
| Titanium | 0.3 | pct | ES | T | semi-quant 6-step ES | USGS-BEG |
| Vanadium | 50 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Chromium | 30 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Manganese | 0.02 | pct | ES | T | semi-quant 6-step ES | USGS-BEG |
| Iron | 20 | pct | ES | T | semi-quant 6-step ES | USGS-BEG |
| Cobalt | 200 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Nickel | 700 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Copper | 700 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Zinc | 700 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Arsenic | 500 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Strontium | N200 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Yttrium | 300 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Zirconium | 2000 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Niobium | N50 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Molybdenum | N10 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Silver | 200 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Cadmium | N50 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Tin | N20 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Antimony | N200 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Barium | 500 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Lanthanum | 2000 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Tungsten | 150 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Gold | 1000 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Lead | 1000 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Bismuth | 30 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |
| Thorium | N200 | ppm | ES | T | semi-quant 6-step ES | USGS-BEG |