Bleb (mineralogy)

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. Blebs tend to be brightly coloured.

specimen of goethite with blebs of green malachite.

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 DOI: 10.1016/j.chemgeo.2006.07.010

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