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  • Journal of weekly news and commentaries about rocks

    lc John Betts Fine Minerals, New York, NY Dealers of Fine Minerals and Natural Crystal Clusters since 1989. Journal of weekly news and commentaries about rocks and ...

  • Excalibur Mineral Corporation Current List

    Current List: Each month, we offer an abbreviated selection of minerals from our inventory of over 200,000 samples. If you don't see what you're ...

  • Excalibur Mineral Corporation Recent List

    This is a selection from several of our recent catalogs with full descriptions. For the latest lists, see our Current Catalog page ...

  • britishmicromountsociety.homestead.com

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    Comments and Observations BMS Micro Collection -141. ('84) The faintly green rosettes of tiny needles have been identified as pumpellyite by XRD (RMS).