MID-TERM ROCK CHART

1 Biotite; possible properties included:
2 Calcite cleavage, luster, streak, hardness, habit,special properties
3 Galena
4 Halite
5 Garnet
6 Selenite
7 Satinspar
8 Alabaster
9 Barite
10 Kaolinite
11 Hemetite
12 Hemetite
13 Hemetite
14 Pyrite
15 Sphalerite
16 K-Feldspar
17 Muscovite mica
18 Amphibole
19 Pyroxene
20 Plagioclase
21 Olivine
22 Magnetite
23 Quartz
24 Talc

36 Pumice: Pumiceous, Volcanic, Felsic-Inter.
37 Scoria: Scoraceous, Volcanic, Mafic
38 Obsidian: Glassy, Volcanic, Felsic
39 Porphyritic Rhyolite: Prophyritic, Volcanic, Felsic
40 Granite: Phaneritic, Plutonic, Felsic
42 Gabbro: Phaneritic, Plutonic, Mafic
43 Diorite: Phaneritic, Plutonic, Intermediate
45 Granite: Phaneritic, Plutonic, Felsic
46 Peridotite: Phaneritic, Plutonic, Felsic
47 Pegmatite: Pegmatitic, Plutonic, Felsic
48 Basalt: Aphanitic, Volcanic, Mafic
49 Porphyritic Basalt: porphyritic, volcanic, mafic
50 Porphyritic Andesite: porphyritic, volcanic, intermediate

51 Fossiliferous Limestone; contains fossils, calcite, fizzes in HCL
52 Fine-Grained Limestone; calcite, fizzes in HCL, marine or non-marine
54 Travertine; calcite, fizzes in HCL, banded, non-marine, cave deposits
55 Conglomerate; Grain Shape, Size, Sorting
56 Sandstone “
57 Siltstone “
58 Shale “
59 Rock Gypsum; hardness<2, massive,
60 Rock Salt; salty, halite, translucent
61 Chert; porcelain-like, microcrystalline quartz,
62 Coal; organic, light heft, carbonaceous, vitreous, dark color

68 Marble; Limestone PC, Calcite Composition, non-foliate
69 Quartzite; Sandstone PC, Quartz Composition, non-foliate
70 Gneiss; Granite/Sedimentary PC, Quartz-Feldspar-Mica Comp., Foliate
71 Serpentinite; Peridotite, Olivine, Nonfoliate
72 Mica Schist; Shale; Quartz-Chlorite- Micas comp., Foliate
73 Garnet Mica Schist; Shale PC, Garnet-Talc-Mica Comp., Foliate
74 Phyllite; Shale, Chlorite-Mica Comp., Foliate
75 Slate; Shale, Clay minerals, Foliate