From X-ray diffraction data, chemical analysis, differential thermal analysis and infra-red absorption spectrum it is shown that two gouge or breccia samples from Veo, Jotunheimen, Norway, contain a trioctahedral Mg-montmorillonite, saponite. It appears that one sample contains a large amount and the other a small amount of saponite. The possibility of random intergrowth with chlorite is discussed, and also the pro bable form ula of saponite.
Contributions to the mineralogy of Norway. No. 27. Saponite from Veo, Jotunheimen.