Name: Vermiculite (Mg,Fe^2+,Al)_3(Al,Si)_4O_10(OH)_2.4H_2O
Type: Mineral
Class: Silicate
Subclass: Phyllosilicate
Particle Size: Medium
Sample No.: PS-18B
Owner: JPL
Wavelength Range: VSWIR
Origin: USA, Montana, Lincoln County, Libby.
Collection Date: N/A
Description: Particle size was 45-125um. Collected by:  Ward's Original ASTER Spectral Library name was jpl.perkin.mineral.silicate.phyllosilicate.medium.ps18b.spectrum.txt
Mineral:  Vermiculite (Mg,Fe^2+,Al)_3(Al,Si)_4O_10(OH)_2.4H_2O

File Name:  ps18b.txt

XRD Analysis:  Vermiculite(A), Smectite(A), possible Kaolinite(T)