Mineral:  Heulandite (Na,Ca)2-3Al3(Al,Si)2Si13O36.12H2O

Sample No.: heulan.1

Petrographic Description:  No solid sample was available.  
Petrographically the sample was pure heulandite, with <1% of the 
grains showing parallel sets of (fluid?) inclusions.

XRD Analysis:  The sample is heulandite with a trace of analcime 
present.

Chemistry:  Sample too small for analysis.
