| IGNEOUS ROCKS | ||
| Granite – Rhyolite Family | ||
| Intrusive | ||
| 1 | Aplite | San Bernardino County, California, USA |
| 2 | Hornblende Granite | Rocport, Massachusetts, USA |
| 3 | Hypersthene Granite (Charnockite) | near Madras, India |
| 4 | Biotite Granite | |
| Extrusive | ||
| 5 | Rhyolite Porphyry | |
| 6 | Pegmatite – Lithium Rich | |
| 7 | Rhyolite Porphyry | |
| 8 | Obsidian, brown and black | Lake County, Oregon, USA |
| 9 | Obsidian, snowflake | |
| 10 | Vitrophyre | |
| 11 | Pumice | Hidalgo, Mexico |
| 12 | Rhyolite , Flow | Chaffee County, Colorado, USA |
| Syenites | ||
| 13 | Hedenbergite Syenite | Portland Twp, Quebec, Canada |
| 14 | Sodalite Syenite | |
| 15 | Shonkinite | San Bernardino County, California, USA |
| Monzonite – Latite Family | ||
| Intrusive | ||
| 16 | Monzonite | Westerley, Rhode Island, USA |
| 17 | Quartz Monzonite | Los Angeles County, California, USA |
| 18 | Quartz Monzonite Porphyry | |
| Diorite – Andesite Family | ||
| Intrusive | ||
| 19 | Orbicular Diorite | Davie County, North Carolina, USA |
| 20 | Diorite Porphyry | Jackson, Wyoming, USA |
| 21 | Hornblende Diorite | |
| 22 | Camptonite | Hoover Dam, Arizona, USA |
| Extrusive | ||
| 23 | Hornblende Andesite Porphyry | Gallatin County, Montana, USA |
| Gabbro – Basalt Family | ||
| Intrusive | ||
| 24 | Jacupirangite | Magnet Cove, Arkansas, USA |
| 25 | Hypersthene Gabbro | Essex County, New York, USA |
| 26 | Anorthosite | Split Rock, Minnesota, USA |
| 27 | Diabase | Dillsburg, Pennsylvania, USA |
| Extrusive | ||
| 28 | Basalt | Pullman, Washington, USA |
| 29 | Diktytaxtic Basalt | Modoc County, California, USA |
| 30 | Vesicular Basalt | Modoc County, California, USA |
| 31 | Leucite Nepheline Tephrite | Laacher See, Germany |
| 32 | Augite Basalt Porphyry | |
| Pyroclastic Family | ||
| 33 | Welded Tuff | Inyo County, California, USA |
| 34 | Tuff | Pima County, Arizona, USA |
| Peridotite Family | ||
| 35 | Pyroxenite (Bronzitite) | Contact Mountain, Montana, USA |
| 36 | Peridotite (Kimberlite) | Yellow Dog, Michigan, USA |
| 37 | Peridotite | |
| Sedimentary Rocks | ||
| Conglomerates and Breccias | ||
| 38 | Conglomerate | Richmondale, Ohio, USA |
| 39 | Limestone Breccia | Boulder County, Colorado, USA |
| 40 | Volcanic Breccia | Mohave County, Arizona, USA |
| Sandstones and Related Rocks | ||
| 41 | Cross-bedded Sandstone | Portland, Connecticut, USA |
| 42 | Arkose (gray) | Gardiner, Montana, USA |
| 43 | Sandstone | Los Angeles County, California, USA |
| 44 | Bituminous Sandstone | |
| 45 | Coconino Sandstone | Mojave County, Arizona, USA |
| 46 | Banded Sandstone | Mansfield, Ohio, USA |
| 47 | Siltstone | Concordia Bridge, Illinois, USA |
| Shales and Related Rocks | ||
| 48 | Arenaceous Shale | Greene County, New York, USA |
| 49 | Ferruginous Shale | Williamsport, Pennsylvania, USA |
| 50 | Bituminous Shale | Little Falls, New York, USA |
| 51 | Laminated Shale | |
| Chalcedonic and Related Stones | ||
| 52 | Flint | Flint Ridge, Ohio |
| 53 | Flint | Flint Ridge, Ohio |
| 54 | Chalcedony pseudomorph after coral | Tamba Bay, Florida, USA |
| Limestones and Related Stones | ||
| 55 | Common Grey Limestone | Monroe County, New York, USA |
| 56 | Lithographic Limestone | Solnhofen, Germany |
| 57 | Red Wall Limestone | Yavapai Co. Arizona, USA |
| 58 | Coquina | St. Augustine, Florida, USA |
| 59 | Pentamerous Limestone | Rochester, New York, USA |
| 60 | Travertine | |
| 61 | Dolomitic Limestone | Kasota, Minnesota, USA |
| 62 | Siliceous Dolomite | Little Falls, New York, USA |
| 63 | Diffusion Dolomite | Fremont County, Colorado, USA |
| 64 | Dolomite | Marquette, Michigan, USA |
| 65 | Potosi Dolomite | Potosi, Missouri, USA |
| 66 | Fusulinid Limestone | Glass Mountains, Texas, USA |
| Ferruginous and Related Rocks | ||
| 67 | Hematite (oolitic) | Clinton, New York, USA |
| Salines (Evaporates) | ||
| 68 | Anhydrite | |
| 69 | Gypsum, var. Alabaster | Pomaia, Italy |
| Organics | ||
| 70 | Bituminous Coal | |
| METAMORPHIC ROCKS | ||
| Hornfels | ||
| 71 | Hornfels | Lambertsville, New Jersey, USA |
| Marbles | ||
| 72 | Graphitic Marble | Los Angeles County, California, USA |
| 73 | White Marble | Lee, Massachusetts, USA |
| 74 | Marble | St. Lawrence County, New York, USA |
| 75 | Chocolate Marble | Knoxville, Tennessee, USA |
| Calc-silicate Rocks | ||
| 76 | Mylonite | Los Angeles County, California, USA |
| Quartzites | ||
| 77 | Pink Quartzite | Dell Rapids, South Dakota, USA |
| 78 | Jasper Pebble Quartzite | Sault St. Marie, Ontario, Canada |
| 79 | Green Quartzite | |
| Slates | ||
| 80 | Red Slate | Granville, New York, USA |
| 81 | Green Slate | Pawlet, Vermont, USA |
| Schists | ||
| 82 | Tourmaline Schist | |
| 83 | Vishnu Schist | near Grand Canyon, Arizona, USA |
| 84 | Crumpled Mica Schist | Gilpin County, Colorado, USA |
| 85 | Garnet Mica Schist | Gassetts, Vermont, USA |
| 86 | Hornblende Schist | Antwerp, New York, USA |
| 87 | Garnetiferous Schist | |
| 88 | Albite Mica Schist | |
| 89 | Staurolite Schist | near Newport, Idaho, USA |
| Gneisses and Related Rocks | ||
| 90 | Diopside Gneiss | Lowell, Idaho County, Idaho, USA |
| 91 | Diorite Gneiss | San Bernardino County, California, USA |
| 92 | Banded Biotite Gneiss | Adirondack Region, New York, USA |
| 93 | Garnet Sillimanite Gneiss | Washington County, New York, USA |
| 94 | Amphibolite, Fine Grained | Soudan, Minnesota, USA |
| 95 | Amphibolite, Coarse Grained | Soudan, Minnesota, USA |
| Epidote Group | ||
| 96 | Unakite | |
| Other Metamorphic | ||
| 97 | Greenstone | Ely, Minnesota, USA |
| 98 | Soapstone | Cameron, Montana, USA |
| 99 | Ferruginous Argillite | Missoula, Montana, USA |
| 100 | Serpentinite |
