Article PDF
Rights and permissions
About this article
Cite this article
The National Mineral Collection, Ottawa. Nature 192, 506 (1961). https://doi.org/10.1038/192506b0
Issue Date:
DOI: https://doi.org/10.1038/192506b0
Nature volume 192, page 506 (1961)
The National Mineral Collection, Ottawa. Nature 192, 506 (1961). https://doi.org/10.1038/192506b0
Issue Date:
DOI: https://doi.org/10.1038/192506b0