List of Rocks you should know:

Sample #	Rock/ Sample name	Rock
1	Peridotite (Use the sample in the back, not the one in your box)	Igneous
2	Basalt
3	Amygdaloidal Basalt
4	Scoria
5	Gabbro
6	Palagonite
7	Porphyritic Andesite
8	Diorite
10	Welded Tuff
11	Ash tuff
14	Red Granite
15	Gray Granite
16	Rhyolite (banded with flow structure)
17	Porphyritic Rhyolite
18	Obsidian
19	Pumice
20	Slate   (red)	Metamorphic
21	Slate  (grey)
22	Phyllite
23	Mica Schist
24	Garnet Schist
25	Schist (Hornblende) (Another name for this rock is Amphibolite)
26	Schist (Glaucophane) (aka blue schist.  Made from an amphibole called glaucophane)
27	Gneiss  (many of these samples have augens in them and can be called augen gneiss)
29	Gneiss (Biotite)
30	Marble (Calcite)
counter	Metaconglomerate (this is on the counter)
32	Breccia	Sedimentary
33	Conglomerate
34	Graywacke Sandstone
35	Arkosic Sandstone
36	Siliceous Sandstone
37	Ferruginous Sandstone
38	Argillaceous Sandstone
39	Quartzite  (look at this sample under the microscope)
40	Siltstone
41	Shale
42	Carbonaceous Shale
43	Massive Limestone
44	Coquina Limestone
45	Travertine Limestone