Metamorphic Rock (Primarily Composed Of Minerals)

Granite

Granite

Likely serpentinite (rough green serpentinite rock)

Serpentinite, composed mainly of serpentine-group minerals (e.g., antigorite, lizardite, and chrysotile)

Mica Schist

Metamorphic rock dominated by mica minerals

Tektite

Impactite (Natural Silicate Glass)

Quartzite

Quartzite (composed primarily of SiO2)

Red Quartzite

Quartzite (composed primarily of SiO2)

Quartzite

Quartzite (composed primarily of SiO2)

Quartzite

Quartzite (composed primarily of SiO2)

Quartzite

Quartzite (composed primarily of SiO2)

Quartzite

Quartzite (composed primarily of SiO2)

Quartzite Cobble

Quartzite (composed primarily of SiO2)

Quartzite

Quartzite (composed primarily of SiO2)

Fossil Shark Tooth

Selachii fossil

Vesicular Basalt with Quartz/Chalcedony

Vesicular Basalt (primarily Plagioclase, Pyroxene, and Olivine with SiO2 infill)

Granite

Intrusive igneous rock primarily composed of quartz, alkali feldspar, and plagioclase

Sandstone

Arenite (SiO2 principal)

Mica Schist

Mica Schist (primarily composed of Muscovite/Biotite)

Sandstone

Arenite (primarily SiO2)

K-Feldspar (Potassium Feldspar)

Orthoclase / Microcline (KAlSi3O8)

Dalmatian Jasper

Feldspar porphyry (Microcline and Quartz with Arfvedsonite spots)

Gneiss

Gneiss (Foliated Metamorphic Rock)

Gray quartz-rich stone (possibly quartzite)

Quartzite, composed primarily of quartz (SiO₂); identification is uncertain from the image

Megalodon Shark Tooth

Otodus megalodon

Sandstone

Arenite (composed primarily of Quartz, SiO2)

Sandstone (with Feldspathic/Arkose qualities)

Arenite (primarily SiO2 with KAlSi3O8 components)

Sandstone (Stream Pebble)

Arenite (primarily SiO2)

Quartz with Mica/Schist inclusion

Silicon Dioxide (SiO2) with Phyllosilicates

Sandstone

Arenite (primarily SiO2)

Epidotite (Unakite-related Epidote)

Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Marble (Sculpted Statue)

Metamorphic Limestone (composed primarily of Calcite, CaCO3)

Sandstone

Arenite (primarily SiO2)

Garnet-bearing Schist / Conglomerate Specimen

Metamorphic rock with almandine garnet porphyroblasts

Epidote and Quartz in Basalt

Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt

Veined Pebble (likely a Quartz-Veined Pebble)

Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)

Likely tumbled greenstone (identity uncertain)

Greenstone: metamorphosed mafic volcanic rock, commonly composed of chlorite, actinolite, and epidote

Pink granite (likely weathered granite)

Granite, composed mainly of quartz, feldspar, and mica

Granite

Felsic intrusive igneous rock

Granite

Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8), and Mica)

Vesicular basalt (likely weathered beach basalt)

Basalt, composed mainly of plagioclase feldspar, pyroxene, and variable olivine

Granite

Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8)

Quartz-veined metamorphic rock, likely greenschist or altered metavolcanic

Chlorite–actinolite–epidote-bearing metavolcanic rock with quartz veins; exact identification requires testing

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)