Igneous Rock Collection, (15 specimen)

Contains 15 representative specimens of intrusive and extrusive igneous rocks, each approximately 1-1/2 inches x 1-1/2 inches.

Grades 5-12.

CONTENT:
PEGMATITE,GRANITE
GRAY,DIORITE,ANORTHOSITE,GABBRO,GRANITE PORPHYRY,BASALT
PORPHYRY,TRACHYTE,RHYOLITE BANDED,ANDESITE,TUFF,OBSIDIAN
BLACK,OBSIDIAN PITCHSTONE,PUMICE 90% FLOAT,SCORIA.