Abstract: A zeolite found in a soil profile developed in Danian chalk was studied. The results showed that it is a heulandite, temperature-stable to above 600°C with a Si/Al ratio of 2.88 and almost completely K-exchanged. The mineral probably formed under burial diagenetic conditions in the chalk formation.
Mineralogical Magazine; March 1990 v. 54; no. 374; p. 91-94; DOI: 10.1180/minmag.1990.054.374.09
© 1990, The Mineralogical Society
Mineralogical Society (www.minersoc.org)