Rock Identifier

Coquina (Limestone) rock specimen

Coquina (Limestone)

Bioclastic Limestone (CaCO3)

sedimentary

Quartzite with inclusions rock specimen

Quartzite with inclusions

Quartzite

metamorphic

Limonite Concretion rock specimen

Limonite Concretion

Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O

sedimentary

Milky Quartz rock specimen

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Pumice rock specimen

Pumice

Pumice (a highly vesicular amorphous silicate glass)

igneous

Chert (Beach Pebble) rock specimen

Chert (Beach Pebble)

Microcrystalline Quartz (SiO2)

sedimentary

Quartzite Cobble rock specimen

Quartzite Cobble

Quartzite (composed primarily of SiO2)

metamorphic

Limestone rock specimen

Limestone

Sedimentary Calcium Carbonate (CaCO3)

sedimentary

Conglomerate rock specimen

Conglomerate

Conglomerate (clastic sedimentary rock)

sedimentary

Sandstone (with Iron Staining) rock specimen

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

sedimentary

Quartzite Pebble rock specimen

Quartzite Pebble

Quartzite (SiO2)

metamorphic

Sandstone rock specimen

Sandstone

Arenite (primarily SiO2)

sedimentary

Puddingstone (Conglomerate) rock specimen

Puddingstone (Conglomerate)

Conglomerate (clastic sedimentary rock)

sedimentary

Polygenetic Conglomerate (Puddingstone) rock specimen

Polygenetic Conglomerate (Puddingstone)

Conglomerate (SiO2 matrix with mixed clasts)

sedimentary

Quartz Vein in Metamorphic Rock rock specimen

Quartz Vein in Metamorphic Rock

Silicon Dioxide (SiO2) within Metasedimentary host

metamorphic

Fossilized Solitary Rugose Coral rock specimen

Fossilized Solitary Rugose Coral

Order Rugosa (commonly Horn Coral)

sedimentary

Gabbro (Water-Worn Cobble) rock specimen

Gabbro (Water-Worn Cobble)

Gabbro

igneous

Chert (Chalcedony/Agate) rock specimen

Chert (Chalcedony/Agate)

Microcrystalline Quartz (SiO2)

sedimentary

Siltstone rock specimen

Siltstone

Siltstone

sedimentary

Porphyritic Rhyolite rock specimen

Porphyritic Rhyolite

Rhyolite (Porphyritic)

igneous

Septarian Nodule rock specimen

Septarian Nodule

Septarian Concretion (CaCO3 + CaMg(CO3)2)

sedimentary

Jasper rock specimen

Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary

Granodiorite rock specimen

Granodiorite

Phaneritic Granodiorite

igneous

Red Jasper rock specimen

Red Jasper

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

sedimentary

Milky Quartz rock specimen

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Greenschist rock specimen

Greenschist

Greenschist (Chlorite-actinolite schist)

metamorphic

Milky Quartz rock specimen

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Amethyst Quartz rock specimen

Amethyst Quartz

Silicon Dioxide (SiO2) with iron impurities

mineral

Flint Nodule rock specimen

Flint Nodule

Microcrystalline Quartz (SiO2)

sedimentary

Red Jasper rock specimen

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary

Porphyritic Basalt rock specimen

Porphyritic Basalt

Amygdaloidal Porphyritic Basalt

igneous

Porphyritic Basalt (River Rock) rock specimen

Porphyritic Basalt (River Rock)

Porphyritic Basalt

igneous

Red Granite rock specimen

Red Granite

Granite (Felsic Plutonic Rock)

igneous

Amethyst rock specimen

Amethyst

Silicon Dioxide (SiO2) with iron impurities

mineral

Basalt with inclusion rock specimen

Basalt with inclusion

Basalt (Aphanitic-Porphyritic texture)

igneous

Garnetiferous Quartzite (Garnet Gneiss Pebble) rock specimen

Garnetiferous Quartzite (Garnet Gneiss Pebble)

Garnet-bearing Quartzite or Quartz-Feldspar Gneiss

metamorphic

Basalt rock specimen

Basalt

Basalt

igneous

Quartzite rock specimen

Quartzite

Quartzite (primarily SiO2)

metamorphic

Fossiliferous Chert with Brachiopod Impression rock specimen

Fossiliferous Chert with Brachiopod Impression

Chert (SiO2) containing Brachiopoda fossil remains

sedimentary

Petrified Dinosaur Bone (Gembone) rock specimen

Petrified Dinosaur Bone (Gembone)

Agatized Dinosaur Bone

sedimentary

Fossiliferous Limestone with Brachiopod shell rock specimen

Fossiliferous Limestone with Brachiopod shell

Calcium carbonate (CaCO3)

sedimentary

Coquina rock specimen

Coquina

Bioclastic Limestone

sedimentary

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