Name: Alunite (potassium alunite) KAl3(SO4)2(OH)6
Type: Mineral
Class: Sulfate
Subclass: None
Particle Size: Fine
Sample No.: alunite_3
Owner: JHU
Wavelength Range: TIR
Origin: Synthetic; Synthesized by Roger Stoffregen, supplied by PhilBethke (USGS).  
Collection Date: N/A
Description:  The sample was a light gray, microcrystalline powder composed of equant or lath-shaped crystallites from 1 to 15 micrometers in largest dimension. Particle size was less than 2 Micrometers. Original ASTER Spectral Library name was jhu.nicolet.mineral.sulfate.none.powder.alunit3.spectrum.txt
Mineral:  Alunite (potassium alunite) KAl3(SO4)2(OH)6

Sample No.: alunite.3

XRD Analysis:  Pure alunite.

Chemistry:  None.

Conditions of Synthesis:  See alunite.1 Additional Information file.
