[Rockhounds] Banding in Agate

[Paul]

Look at Götze, J., Möckel, R. and Pan, Y., 2020. Mineralogy,
geochemistry and genesis of agate—A review. Minerals,
10(11), p.1037. (Page 10)
https://www.researchgate.net/publication/347076796_Mineralogy_Geochemistry_and_Genesis_of_Agate-A_Review
https://www.mdpi.com/2075-163X/10/11/1037

Petránek, J., 2004. Gravitationally banded (“Uruguay-type”)
agates in basaltic rocks–where and when?. Bulletin of
Geosciences, 79(4), pp.195-204.
http://www.geology.cz/bulletin/fulltext/bullgeosci200404195.pdf

Pabian, R.K. and Zarins, A. (1994) Banded agates;
Origins and inclusions. Educational Circular No. 12,
University of Nebraska, Lincoln, USA, 32 pp.
https://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1408&context=conservationsurvey

Yours,

Paul H.