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unidentified mineral sample (radioactive)
unidentified mineral sample (radioactive)

unidentified mineral sample (radioactive)

Date1900-1930
Inventory Number3917c
ClassificationMineral Sample
Subject
    Maker American ?
    Cultural Region
      Dimensions2 x 5 cm (13/16 x 1 15/16 in.)
      Material
        DescriptionBlack minerals packed in a cylindrical cardboard box with black paper on the side. The sample is radioactive.

        Contains Thorium 232, tested on 6/9/2025 by radiation safety office using a "Thermo-Scientific RIIDEYE M-G3, Radiation Isotope Identification" device
        Signedunsigned
        Inscribedinscription illegible under sticker
        Curatorial RemarksProbably same substance as 3917a.
        unidentified mineral sample (radioactive)
        unidentified mineral sample (radioactive)
        American
        Date: 1900-1930
        Object number: 3917a
        unidentified mineral sample (radioactive)
        unidentified mineral sample (radioactive)
        American
        Date: 1890-1930
        Object number: 3928
        canvas sack of thorianite granules
        canvas sack of thorianite granules
        Foote Mineral Company
        Date: circa 1915
        Object number: 4943
        sealed glass jar of thorianite ore
        sealed glass jar of thorianite ore
        Foote Mineral Company
        Date: circa 1915
        Object number: 4712
        stoppered glass test tube of radium
        stoppered glass test tube of radium
        Theodore William Richards
        Date: circa 1900
        Object number: 4878
        sample of uranium ore in a stoppered glass test tube
        sample of uranium ore in a stoppered glass test tube
        Percy Williams Bridgman
        Date: circa 1925
        Accessories: wooden test tube holder
        Object number: 1998-1-0060r
        W. Crookes Spinthariscope
        W. Crookes Spinthariscope
        Eimer & Amend
        Object number: 1997-1-1698
        Image Not Available for uranium cube from ALSOS Mission
        uranium cube from ALSOS Mission
        Edwin C. Kemble
        Date: 1940-1944
        Accessories: lead shielding; plastic tub
        Object number: 2023-1-0045
        strontium formate crystal section in glass jar
        strontium formate crystal section in glass jar
        Percy Williams Bridgman
        Date: 1946
        Accessories: small white cardboard box glass jar wooden shipping crate
        Object number: 1998-1-1308
        Split Anode Magnetron
        Split Anode Magnetron
        Telefunken
        Object number: VT0285
        X-ray Parts
        X-ray Parts
        Date: circa 1900
        Object number: 1998-1-0116
        control console from Harvard Cyclotron Laboratory
        control console from Harvard Cyclotron Laboratory
        Harvard Cyclotron Laboratory
        Date: 1947-2002
        Object number: 2003-1-0291