Name: Anorthite CaAl2Si2O8
Type: Mineral
Class: Silicate
Subclass: Tectosilicate
Particle Size: Coarse
Sample No.: anorthite_1
Owner: JHU
Wavelength Range: TIR
Origin: Sample from Bruce Hemingway, USGS; synthesized by JamesWoodhead, Princeton University.
Collection Date: N/A
Description: The sample was a coarse white powder.  The sample appears pure under the microscope, with very fine (cryptocrystalline) texture.(Synthetic) (Framework silicates) (Feldspar Group)Particle size was 75-250 Micrometers. Original ASTER Spectral Library name was jhu.nicolet.mineral.silicate.tectosilicate.coarse.anorth1.spectrum.txt
Mineral:  Anorthite CaAl2Si2O8

Sample No.: anorth.1

XRD Analysis:  Pure anorthite.

Chemistry:  Microprobe analysis of the recrystallized mineral showed 
it to be homogeneous within and between grains.  Average of 10 
analyses:

SiO2 	43.53
Al2O3	0.02
FeO 	0.02
MgO	0.03
CaO 	19.26
K2O	0.04
Na2O	0.03
TiO2	0.01
MnO 	0.03
	_____
Total 	100.32

NO SOLID SAMPLE AVAILABLE
