U.S. Geological Survey Geochemical Reference Materials and Certificates
U.S. Geological Survey
Certificate of Analysis
Material was collected from the Sullivan quarry near Near Bradford, Rhode Island, which is approximately three miles east of the site where G-1 was collected. The material was collected by Felix Chayes, Geophysical Laboratory, Carnegie Institution.
Element concentrations were determined by cooperating laboratories using a variety of analytical methods. Certificate values are based primarily on international data compilations (Gladney, et al. 1992, Govindaraju, K., 1989, Govindaraju, 1994). USGS reports (Flanagan, F.J., 1969, Flanagan, 1976) provide background information on this material.
Recommended Values | Information Values | Certificate Information | Bibliography | Notes
| Oxide | Wt % | ± | Oxide | Wt % | ± | |
|---|---|---|---|---|---|---|
| Al2O3 | 15.39 | 0.30 | MgO | 0.75 | 0.03 | |
| CaO | 1.96 | 0.08 | MnO | 0.03 | 0.01 | |
| Fe2O3 | 1.07 | 0.14 | Na2O | 4.08 | 0.13 | |
| FeO | 1.46 | 0.08 | P2O5 | 0.14 | 0.01 | |
| Fe2O3T | 2.66 | 0.17 | SiO2 | 69.14 | 0.3 | |
| K2O | 4.48 | 0.13 | TiO2 | 0.48 | 0.03 |
| Element | µg/g | ± | Element | µg/g | ± | Element | µg/g | ± | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Ba | 1880 | 23 | Ga | 23 | 2 | Sm | 7.2 | 0.7 | ||
| Be | 2.5 | 0.4 | Hf | 7.9 | 0.7 | Sr | 478 | 2 | ||
| Ce | 160 | 10 | La | 89 | 8 | Th | 25 | 2 | ||
| Co | 4.6 | 0.7 | Li | 34 | 4 | V | 36 | 4 | ||
| Cs | 1.34 | 0.16 | Nd | 55 | 6 | Y | 11 | 2 | ||
| Dy | 2.4 | 0.3 | Pb | 30 | 4 | Yb | 0.8 | 0.2 | ||
| Eu | 1.4 | 0.12 | Rb | 170 | 3 | Zn | 86 | 8 | ||
| F | 1280 | 80 | Sc | 3.5 | 0.4 | Zr | 309 | 35 |
| Element | µg/g | Element | µg/g | Element | µg/g | ||
|---|---|---|---|---|---|---|---|
| As | 0.25 | Gd | 4.3 | Se | 0.07 | ||
| B | 2.4 | Ho | 0.4 | Ta | 0.5 | ||
| Bi | 0.04 | Lu | 0.11 | Tb | 0.48 | ||
| Cl | 70 | Nb | 12 | Tm | 0.18 | ||
| Cu | 11 | Pr | 18 | W | 0.2 | ||
| Er | 0.92 | Stot | 100 | ||||
Denver, Colorado
revised March 1995
David B. Smith
Central Region Mineral Resources Team (formerly Branch of Geochemistry)
Flanagan, F.J., 1969, U.S. Geological Survey silicate rock standards, Geochimica et Cosmochimica Acta, vol. 31, pp. 289-308.
Flanagan, F.J., 1976, Descriptions and Analysis of Eight New USGS Rock Standards, Geological Survey Professional Paper 840, 192 pp.
Gladney, E.S., Jones, E.A., Nickell, E.J., and Roelandts, I., 1992, 1988 Compilation of elemental concentration data for USGS AGV-1, GSP-1 and G-2, Geostandards Newsletter, vol. 16, pp. 111-300.
Govindaraju, K., 1989, 1989 Compilation of working values and sample description of 272 geostandards, Geostandards Newsletter, vol. 13, pp. 1-113.
Govindaraju, K., 1994, 1994 Compilation of working values and description for 383 geostandards, Geostandards Newsletter, vol. 18, pp. 1-158.
Unless otherwise indicated total element concentrations are reported for material on an as-received basis, i.e., no drying.
Drying instructions
Certificate values are based on analyses performed on an as-received basis, i.e., drying is not required.
This geochemical reference standard is no longer available.
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