Name: Basaltic Andesite
Type: rock
Class: Igneous
Subclass: Intermediate
Particle Size: Solid
Sample No.: Andesite_H4
Owner: JHU
Wavelength Range: All
Origin: Agrigan Volcano, Mariana Is., via Smithsonian (Cat. No115263-19)
Collection Date: N/A
Description: A dark gray, porphyritic and vuggy rock. The phenocrysts are plagioclase laths, orangish-yellow olivine and opaques. Original ASTER Spectral Library name was jhu.becknic.rock.igneous.intermediate.solid.andesi4.spectrum.txt
Composition:

Petrographic Description:  None.

Microprobe Analysis:  None.

Chemical Analysis:  (analyzed by Robert J. Stern, Carnegie Geophysical 
Laboratory)
SiO2  -  53.3
CaO  10.05
TiO2  0.73
Na2O  3.04
Al2O3  19.5
K2O  1.18
Fe2O3  3.5
P2O5  0.20
FeO  6.07
MnO  0.18
MgO  2.87
TOTAL  100.62
