Name: Heulandite (Na,Ca)2-3Al3(Al,Si)2Si13O36.12H2O
Type: Mineral
Class: Silicate
Subclass: Tectosilicate
Particle Size: Fine
Sample No.: heulan_2
Owner: JHU
Wavelength Range: TIR
Origin: Gobel, Oregon via Joe Taggart, USGS, Denver, Colorado.
Collection Date: N/A
Description: The sample is composed of 1 cm diameter, pearly, translucent crystals in a white, fine-grained groundmass. Crystals were separated by hand and appear to be pure heulandite.Particle size was less than 2 micrometers.(Zeolite Group) Original ASTER Spectral Library name was jhu.nicolet.mineral.silicate.tectosilicate.powder.heulan2.spectrum.txt
Mineral:  Heulandite (Na,Ca)2-3Al3(Al,Si)2Si13O36.12H2O

Sample No.: heulan.2

XRD Analysis:  Pure heulandite.

Chemistry:   XRF analysis of the non-volatiles by J. Taggart, A. Bartel, 
and D. Diems, and volatile analysis by C. Papp, USGS Branch of 
Analytical Chemistry, Denver, showed good heulandite composition:

SiO2	58.30
Al2O3	16.10
FeTO3	<0.04
MgO	<0.01
CaO	7.36
K2O	0.25
Na2O 	1.36
TiO2	<0.02
MnO	<0.02
P2O5	<0.05
H2O	15.30
Other LOI	0.90
	_____
Total	99.71
