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Material Database:

SRM 278 - Obsidian Rock
Type Certified reference material
Producer National Institute of Standards and Technology (NIST)
Status Available
Material Powder
Reference SRM 278
Catalog (Web) https://www-s.nist.gov/srmors/view_detail.cfm?srm=278
 
Description

SRM 278 - Obsidian Rock

 This Standard  Reference  Material  (SRM) is intended for use in evaluating the accuracy of analytical methods and instruments used in the analysis of geological type materials.  SRM 278 is a finely powdered obsidian rock, which was obtained  from Ciear Lake, Newberry Crater,  Oregon.

 

keywords: Geological materials, Rock/Igneous rock, trace elements


Package
35 g

Parameter
Analyte   Aluminum  
Specification   total element mass fraction (as Al2O3)  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   14.15 ± 0.15  

Analyte   Calcium  
Specification   total element mass fraction (as CaO)  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   0.983 ± 0.002  

Analyte   Copper  
Specification   total element mass fraction  
Parameter   Certified value  
Unit   mg/kg  
Result   5.9 ± 0.2  

Analyte   Iron  
Specification   iron(II) as FeO  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   1.36 ± 0.02  

Analyte   Iron  
Specification   total iron as Fe2O3  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   2.04 ± 0.02  

Analyte   Lead  
Specification   total element mass fraction  
Parameter   Certified value  
Unit   mg/kg  
Result   16.4 ± 0.2  

Analyte   Manganese  
Specification   total element mass fraction (as MnO)  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   0.052 ± 0.002  

Analyte   Nickel  
Specification   total element mass fraction  
Parameter   Certified value  
Unit   mg/kg  
Result   3.6 ± 0.3  

Analyte   Phosphorous  
Specification   total element mass fraction (as P2O5)  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   0.036 ± 0.003  

Analyte   Potassium  
Specification   total element mass fraction (as K2O)  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   4.16 ± 0.02  

Analyte   Rubidium  
Specification   total element mass fraction  
Parameter   Certified value  
Unit   mg/kg  
Result   127.5 ± 0.3  

Analyte   Silicon  
Specification   total element mass fraction (as SiO2)  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   73.05 ± 0.13  

Analyte   Sodium  
Specification   total element mass fraction (as Na2O)  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   4.84 ± 0.05  

Analyte   Strontium  
Specification   total element mass fraction  
Parameter   Certified value  
Unit   mg/kg  
Result   63.5 ± 0.1  

Analyte   Thallium  
Specification   total element mass fraction  
Parameter   Certified value  
Unit   mg/kg  
Result   0.54 ± 0.04  

Analyte   Thorium  
Specification   total element mass fraction  
Parameter   Certified value  
Unit   mg/kg  
Result   12.4 ± 0.3  

Analyte   Titanium  
Specification   total element mass fraction (as TiO2)  
Parameter   Certified value  
Unit   mass fraction (in %)  
Result   0.245 ± 0.007  

Analyte   Uranium  
Specification   total element mass fraction  
Parameter   Certified value  
Unit   mg/kg  
Result   4.58 ± 0.04  








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