Reference Materials repository

Bence

Hi,

You can now upload reference materials files to this thread to share with the community.

Some things to note:

We make no guarantees that the files posted here are safe to use. Please download at your own discretion.
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amzipkin

Hi folks,

For anyone else working with LA-MC-ICP-MS to measure radiogenic strontium ratios (87/86), this might be useful. The NanoSr microanalytical calcium carbonate reference material is available on request from Michael Weber, the first author of the paper here: https://doi.org/10.1111/ggr.12296

I have used this pressed nanopowder for the last couple of years for sample-standard bracketing and found it comparable in effectiveness to other nanopowders like JCp-1NP (https://www.my-standards.com/en/products/carbonates/jcp-1-np-sold-out/).

The .json file I have attached uses the bulk solution ICP-MS and MC-ICP-MS values from Weber's paper, not the laser ablation values. It includes the 87/86Sr ratio and concentrations for Rb, Sr, Ba, Dy, Er, and Yb.

c-nanosr.json

3kB

martinR

Hi All,

Quick question: has anyone already prepared a reference file for the FC-1 zircon (Paces and Miller, 1993: ‘Precise U-Pb Ages of Duluth Complex and Related Mafic Intrusions, Northeastern Minnesota’.)? Or do you know of a repository where I can at least download the data, I can only find age, Hf isotopes and U ppm, but no U-Th-Pb isotope ratios... (And I don't have access to the original paper)

Many thanks,
Martin

Bence

martinR

I have just created a quick spreadsheet from the paper you mentioned, calculated the mean ratios (median value for concentrations) and created a basic RM file.

I'm not sure if there are other values published out there for this RM, but perhaps you can use this as a starting point if you'd like.

-Bence

z-fc1.json

4kB

martinR

That's fantastic, many thanks! I'll give it a try...