File:Malachite-Goethite-122872.jpg
specimen of goethite with blebs of green malachite.

In geology, mineralogy, and petrology, a bleb is a small bubble-like inclusion of one mineral within a larger mineral. An example is a bleb of sylvite within chlorite.

References

  • Kamenetsky VS et al. Chloride and carbonate immiscible liquids at the closure of the kimberlite magma evolution (Udachnaya-East kimberlite, Siberia) Chemical Geology, Volume 237, Issues 3-4, 5 March 2007, Pages 384-400