U.S. Geological Survey Certificate of Analysis

Icelandic Basalt, BIR-1

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
Al2O3 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

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Information Values

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

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Certificate Information

Denver, Colorado
revised March 1998

David B. Smith
Central Region Mineral Resources Team (formerly Branch of Geochemistry)

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Bibliography

Flanagan, F.J., 1984, Three USGS mafic rock reference samples, W-2, DNC-1, and BIR-1: U.S. Geological Survey Bulletin 1623, 54 p.

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.

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Glossary

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

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Notes

Unless otherwise indicated total element concentrations are reported for material on an as-received basis, i.e., no drying.

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Order and Pricing Information

Placing an Order

USGS reference materials may be obtained directly from Dr. Stephen A. Wilson. The price for each reference material is listed in U.S. dollars and are subject to change. For domestic orders, this cost includes all shipping and handling charges using normal mail delivery by the U.S. Postal Service. For foreign orders, delivery charges will be added to the final bill. Urgent requests for reference materials should be initiated by Fax or e-mail. If required, expedited delivery is available with any additional shipping charges added to the final bill.

To order a USGS Reference Material, please contact Dr. Stephen Wilson or use the downloadable form: Order Form (Word) (22 KB) or Order Form (PDF) (238 KB).

Dr. Stephen A. Wilson
U.S. Geological Survey
Box 25046, MS 964D
Denver, CO 80225
Tel: 303-236-2454
FAX: 303-236-3200 or 303-236-1425
Email: (swilson@usgs.gov)

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