Tiger's Eye (Mineral Collection) rock specimen

Tiger's Eye (Mineral Collection)

Tiger's Eye (SiO2 with crocidolite inclusions)

mineral

Sodalite rock specimen

Sodalite

Na8(Al6Si6O24)Cl2

mineral

Slate rock specimen

Slate

Slate (Foliated metamorphic rock consisting mainly of quartz and muscovite or illite)

metamorphic

Basalt rock specimen

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

igneous

Obsidian rock specimen

Obsidian

Obsidian (Volcanic Glass)

igneous

Amethyst (Geode Fragment) rock specimen

Amethyst (Geode Fragment)

Silicon Dioxide (SiO2 with iron impurities)

mineral

Coquina rock specimen

Coquina

Coquina (Bioclastic Limestone)

sedimentary

Spinosaurus Tooth Fossil rock specimen

Spinosaurus Tooth Fossil

Spinosaurus aegyptiacus (Calcium Phosphate/Apatite)

sedimentary

Clear Quartz (Rock Crystal) rock specimen

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Fluorite rock specimen

Fluorite

Calcium fluoride (CaF2)

mineral

Schist rock specimen

Schist

Mica Schist

metamorphic

Chert (Jasper/Flint variety) rock specimen

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary

Quartz (Iron-stained) rock specimen

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

mineral

Granite (Leucogranite) rock specimen

Granite (Leucogranite)

Felsic Plutonic Rock (Granite)

igneous

Dendritic Agate or Manganese Nodule in Chert/Limestone rock specimen

Dendritic Agate or Manganese Nodule in Chert/Limestone

Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions

sedimentary

Sandstone (Banded) rock specimen

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)

sedimentary

Sandstone (with Iron concretions/staining) rock specimen

Sandstone (with Iron concretions/staining)

Arenite (composed primarily of Quartz and Feldspar with Iron Oxide cement)

sedimentary

Rhyolitic Tuff rock specimen

Rhyolitic Tuff

Rhyolitic Tuff / Pyroclastic rock

igneous

Ferruginous Quartzite (Red Sandstone/Quartzite) rock specimen

Ferruginous Quartzite (Red Sandstone/Quartzite)

Quartzite with Iron inclusions (SiO2 + Fe2O3)

metamorphic

Quartzite rock specimen

Quartzite

Quartzite (primarily SiO2)

metamorphic

Gneiss (Banded Gneiss) rock specimen

Gneiss (Banded Gneiss)

Gneiss

metamorphic

Seashell Fragment (Aragonite/Calcite) rock specimen

Seashell Fragment (Aragonite/Calcite)

Calcium Carbonate (CaCO3) - Shell fragment

sedimentary

Banded Gneiss rock specimen

Banded Gneiss

Gneiss (Metamorphic Rock)

metamorphic

Quartzite Pebble rock specimen

Quartzite Pebble

Meta-quartzite

metamorphic

Diorite (Salt and Pepper Rock) rock specimen

Diorite (Salt and Pepper Rock)

Diorite

igneous

Granite Gneiss rock specimen

Granite Gneiss

Felsic Gneiss

metamorphic

Fossiliferous Chert (with Fossil Shells) rock specimen

Fossiliferous Chert (with Fossil Shells)

Silicon Dioxide (SiO2) with biogenic inclusions

sedimentary

Milky Quartz with Chlorite/Mica inclusions rock specimen

Milky Quartz with Chlorite/Mica inclusions

Silicon Dioxide (SiO2) with phyllosilicate inclusions

mineral

Milky Quartz rock specimen

Milky Quartz

Silicon dioxide (SiO2)

mineral

Sandstone (Ferruginous) rock specimen

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 cement)

sedimentary

Milky Quartz with Country Rock contact rock specimen

Milky Quartz with Country Rock contact

Silicon Dioxide (SiO2) in contact with Metamorphic/Igneous rock

mineral

Milky Quartz rock specimen

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Septarian Nodule rock specimen

Septarian Nodule

Septarian concretion (Complex mixture of Siderite, Calcite, and Aragonite)

sedimentary

Chert (or Flint) rock specimen

Chert (or Flint)

Chert (Sedimentary Cryptocrystalline Sio2)

sedimentary

Quartzite rock specimen

Quartzite

Quartzite (SiO2)

metamorphic

Basalt rock specimen

Basalt

Basalt (Mafic Extrusive Igneous Rock)

igneous

Petrified Wood rock specimen

Petrified Wood

Silicified Wood (SiO2)

metamorphic

Sandstone rock specimen

Sandstone

Arenite (primarily SiO2)

sedimentary

Sandstone (Quartzose Sandstone) rock specimen

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (SiO2 major component)

sedimentary

Chert (variations include Flint/Jasper) rock specimen

Chert (variations include Flint/Jasper)

Chert (SiO2)

sedimentary

Labradorite rock specimen

Labradorite

Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8

mineral

Basalt with Caliche Crust rock specimen

Basalt with Caliche Crust

Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating

igneous