A Heulandite with Excess Water

William S. Wise
Department of Geology, University of California, Santa Barbara, California

Summary: A heulandite from Nelson Creek, Skamania County, Washington, has 30 H2O per unit cell instead of the normal 24; the excess water is lost on gentle heating. The b and c cell-dimensions are also rather larger than normal. Normal heulandite also occurs in the same area.

Mineralogical Magazine; March 1967 v. 36; no. 277; p. 64-69; DOI: 10.1180/minmag.1967.036.277.09
© 1967, The Mineralogical Society
Mineralogical Society (www.minersoc.org)