Description
The 15 rocks in this group are representative of the intrusive and extrusive igneous rocks and those related to volcanic activities. Specimens are about 1 1/2″ and are number coded and keyed to a list. In compartmented container.
Includes
- 1 Pegmatite (Labeled ‘1’)
- 1 Granite (Labeled ‘2’)
- 1 Diabase (Labeled ‘3’)
- 1 Anorthosite (Labeled ‘4’)
- 1 Gabbro (Labeled ‘5’)
- 1 Basalt Porphyry (Labeled ‘6’)
- 1 Trachyte (Labeled ‘7’)
- 1 Basalt (Labeled ‘8’)
- 1 Ryolite (Labeled ‘9’)
- 1 Andesite (Labeled ’10’)
- 1 Tuff (Labeled ’11’)
- 1 Obsidian (Labeled ’12’)
- 1 Pitchstone (Labeled ’13’)
- 1 Pumice (Labeled ’14’)
- 1 Scoria (Labeled ’15’)