U.S. Geological Survey Geochemical Reference Materials and Certificates
U.S. Geological Survey
Certificate of Analysis
Material for this reference material was collected from one of the interglacial lava flows often referred to as the Reykjavik dolerites, by Karl Gronwold of the Nordic Volcanological Institute at Reykjavik (Flanagan, 1984). The Reykjavik dolerites are a group of lava flows most likely from shield volcanos dating from the youngest interglacial periods. The rock is as a coarse-grained olivine tholeiite.
Recommended concentrations for elements and oxides are reported when results from USGS interlaboratory studies (Flanagan and Gottfried, 1980) using independent methods of analysis are in statistical agreement. Supplemental information derived from international data compilations (Abbey, 1983, Govindaraju, 1994) is also provided.
Information concentrations are given when results are based on analyses obtained using a single technique or when data from different procedures are not in statistical agreement.
Recommended Values | Information Values | Certificate Information | Bibliography | Glossary | Notes | Order and Pricing Information
| Oxide | Wt% | ± | Oxide | Wt% | ± | |
|---|---|---|---|---|---|---|
| SiO2 | 47.96 | 0.19 | Na2O | 1.82 | 0.045 | |
| Na2O3 | 15.5 | 0.15 | K2O | 0.030 | 0.003 | |
| CaO | 13.3 | 0.12 | MnO | 0.175 | 0.003 | |
| MgO | 9.70 | 0.079 | P2O5 | 0.021 | 0.001 | |
| FeO | 8.34 | 0.10 | TiO2 | 0.96 | 0.01 | |
| Fe2O3 | 2.06 | 0.10 | Fe2O3T | 11.3 | 0.12 |
| Element | µg/g | ± | Element | µg/g | ± | |
|---|---|---|---|---|---|---|
| Cu | 125 | 4 | La | 0.63 | 0.07 | |
| Dy | 4 | 1 | Li | 3.6 | 0.2 | |
| Ce | 1.9 | 0.4 | Sc | 44 | 1 | |
| Co | 52 | 2 | Sr | 110 | 2 | |
| Cr | 370 | 8 | V | 310 | 11 | |
| Eu | 0.55 | 0.05 | Y | 16 | 1 | |
| Gd | 1.8 | 0.4 | Yb | 1.7 | 0.1 | |
| Hf | 0.6 | 0.08 | Zn | 70 | 9 | |
| Nd | 2.5 | 0.7 | Zr | 18 | 1 | |
| Ni | 170 | 6 | ||||
| Element | µg/g | Element | µg/g | |
|---|---|---|---|---|
| As | 0.44 | Ga | 16 | |
| B | 0.33 | Lu | 0.26 | |
| Ba | 7 | Nb | 0.6 | |
| Be | 0.58 | Pb | 3 | |
| Cl | 26 | Sb | 0.58 | |
| F | 44 | Sm | 1.1 |
Denver, Colorado
revised March 1998
David B. Smith
Central Region Mineral Resources Team (formerly Branch of Geochemistry)
Flanagan, F.J., 1984, Three USGS mafic rock reference samples, W-2, DNC-1, and BIR-1, U.S. Geological Survey Bulletin 1623, p. 54.
Gladney, E.S., and Roelandts, I., 1988, 1987 compilation of elemental concentration data for USGS BIR-1, DNC-1, and W-2, Geostandards Newsletter, 12: 63-118.
Govindaraju, K., 1994, 1994 compilation of working values and descriptions for 383 geostandards, Geostandards Newsletter, 118: 1-158.
| Symbol | Definition |
|---|---|
| Fe2O3T | Total iron expressed as Fe2O3 |
| Wt% | Percent of total element concentration |
| µg/g | Total element concentration expressed as micrograms of element per gram of solid sample |
| ± | One standard deviation |
Unless otherwise indicated total element concentrations are reported for material on an as-received basis, i.e., no drying.
USGS reference materials (RMs) may be obtained directly from Dr. Stephen A. Wilson. The price for each bottle of RM is $80.00 (U.S. dollars) except DGPM-1, which is $175.00 (U.S. dollars). For domestic orders, this cost includes all shipping and handling charges using normal mail delivery. For foreign orders, delivery charges will be added to the final bill. Urgent requests for RMs should be initiated by Fax or e-mail. If required, overnight delivery is available with these charges added to the final bill.
Dr. Stephen A. Wilson
U.S. Geological Survey
Box 25046, MS 964
Denver, CO 80225
Tel: 303-236-2454
FAX: 303-236-3200 or 303-236-1425
e-mail: (swilson)
Domestic customers: Payment options include purchase order, check, money order, or credit card (Visa, Mastercard).
International customers: Payment on foreign orders can only be made using the following:
Payments for domestic or international orders using a credit card receive a 10% discount on the per bottle price.
Beginning in 2006, users of USGS geochemical reference standards must complete a user agreement form prior to the order being purchased.
User agreement for domestic users: Word format, 56 KB and PDF format, 24 KB.
User agreement for foreign users: Word format, 56 KB and PDF format, 28 KB.
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