What does gummite mean?
Gummite is a dark brown to black mineral associated with uranium. It was historically treated as a distinct mineral species, but modern mineralogists generally classify it as a variety of uraninite, the principal uranium oxide mineral. Gummite commonly forms as an alteration product of uraninite and can consequently be encountered in the oxidized or weathered zones of uranium deposits. Its distinctive color and composition make it useful for detailed mineralogical and geological study, although it is of little everyday importance outside specialist contexts. In scientific writing, the term normally denotes the material rather than an individual specimen, so it is often treated as a mass noun. The word is principally encountered in mineralogy, geology, uranium exploration, and reference works cataloging minerals.
nounA dark brown to black, uranium-bearing mineral now generally classified as a variety of uraninite. It commonly occurs as an alteration product in uranium deposits.
- A dark brown to black, uranium-bearing mineral now generally classified as a variety of uraninite.
"The geologist identified a dark band of gummite in the uranium ore sample."
"The geologist identified a dark band of gummite in the uranium ore sample."
"Gummite is of interest primarily as an indicator of uranium mineralization."
The plural is grammatically possible but uncommon, especially when referring generally to the mineral.
"The specimens collected from the deposit included several distinct gummites."
Gummite was once listed as a mineral in its own right; modern mineralogy treats it as a variety of uraninite.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of gummite
The English word was borrowed from German Gummit, whose ending uses the widely established mineralogical suffix -ite. The specific reason for the original German name is not consistently explained in standard etymological references.
How gummite is actually used
This is specialized mineralogical and geological terminology. It is normally used in formal scientific contexts, often as a mass noun, and plural forms are uncommon.
Easily confused with gummite
Uraninite is the broader mineral species, while gummite is a specific dark-colored variety or alteration product of uraninite.