Gummite

Not a valid mineral species

A mixture of Uranium minerals, including:
Curite, Clarkeite, Soddyite, Uranophane, Kasolite, Boltwoodite, Fourmarierite and Becquerelite, which are alteration products of Uraninite
Uranium
(Images)

Property Data Remarks
Named for: The gum-like consistancy it often shows
Alternate
    Name(s):
  • Eliasite
  • Gummierz
  • Phosphor-Gummit
  • Phosphorogummit
  • Pittinite
  • Urangummit
  • Uranogummite
  • Pechuran
  
Mineral Class: None - a mixture of Uranium minerals  
Chemical
    Formula:		 A Mixture of Uranium Oxides, Silicates and Hydrates, mostly Fourmarierite and Becquerelite  
Chemical
    Composition:		 Variable by weight
Molecular
    Weight:		 Not applicable daltons (amu)
Specific
    Radioactivity:

Variable

Crystalography: Not applicable  
Habit:
  • Amorphous, rounded masses similar to a mass of gum - thus its name.
    		•   
    Cleavage: None  
    Fracture: Uneven  
    Moh's
        Hardness:    		 2.5  
    Density: 3.9 - 4.2 grams/cm3
    Color: Reddish-yellow to Orange-red, Redish brown  
    Streak: Pale yellow to brown  
    Luster: Greasy to waxy  
    Diaphaneity: Translucent  
    Pleochroism: Not applicable  
    Ultra Violet
        Fluorescence:    		 Some of its component minerals may be Fluorescent  
    Magnetism: Non-magnetic  
    Occurance:
  • A mixture of secondary minerals formed by the alteration of uraninite
  • Granite pegmatites, as dendritic veins in fieldspars
  • With Uraninite in hypothermal veins
  • With Uraninite in high temperature hydrothermal veins
  • Alteration product of Uraninite fossilized wood by hydrothermal action
    		•   
    Associated
        Minerals:

    Albite, Almandine, Arsenopyrite, Autunite, Barite, Beryl, Beryl var: Aquamarine, Beryl var: Heliodor, Biotite, Calcite, Chalcopyrite, 'Columbite', Fluorapatite, Fluorite, Galena, Hematite, 'Limonite', Magnetite, Malachite, Meta-Autunite, Microcline, Molybdenite, Muscovite, Opal var: Hyalite, Phosphuranylite, Pitchblende, Pyrite, Pyrolusite, Pyrrhotite, Quartz, Quartz var: Rose Quartz, Quartz var: Smoky Quartz, Schorl, Siderite, Spessartine, Sphalerite, Torbernite, 'Tourmaline Group', Triphylite, Uraninite, Uranophane, Vivianite, Zircon, Zircon var: Cyrtolite

    Mineral   -   > 49% of sites
    Mineral   -   > 32% of sites
    Mineral   -   > 14% of sites
    Minerals   -   Uranium & Thorium
    mineral links

    		These are minerals known to be found with Gummite
    Localities: Relatively common

    Gummite Localities
    Notes:

    Strongly radioactive a- and b-particles, g-rays.

    Gummite Images

    Specimen #1
      (001top) (001btm)  
     
    (Polished Side)
    (Unpolished Side)    		  
    (001a) (001b) (001c) (001d)

    (Unpolished Side)
    (001e) (001f) (001g) (001h)
    (001i) (001j) (001k)  
     
    Ruggles mine, Graton, New Hampshire, USA

    Specimen Notes

    Occurrence -  

     

    Crystals -  

     

    Appearence -  

    Diaphaniety -

    Luster -

     

      -  

     

    Specimen Physical Properties
    Size   cm   cm   cm
    Weight: x grams    
    g-Radiation Level:   cmp   msieverts background: 20 cpm