Metamorphic (Likely Gneiss Or Schist Based On Texture)

Quartzite

Quartzite (chiefly SiO2)

Yellow Quartzite Pebble

Quartzite (SiO2)

Granite (River-worn Cobble)

Phaneritic Felsic Igneous Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)

Basalt

Mafic Igneous Rock

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (Basalt) with CaCO3

White Quartz Pebble

Silicon Dioxide (SiO2)

Beach Pebble (likely Quartz or Chalcedony)

Silicon Dioxide (SiO2)

River Stone (likely Siltstone or fine-grained Sandstone)

Clastic Sedimentary Rock (Lithic Wacke / Siltstone)

Sandstone

Arenite (primarily SiO2)

Basalt

Basalt (containing Pyroxene, Plagioclase feldspar, and Olivine)

Basalt (Vesicular or Scoriaceous)

Aphanitic Mafic Volcanic Rock

Serpentine, likely a variety of Chrysoprase (green chalcedony) or a similar translucent green mineral.

Serpentine Group Minerals (e.g., Antigorite, Lizardite) or Chalcedony (SiO2) with nickel impurities for Chrysoprase green.

Basalt

Basalt (Extrusive Mafic Igneous)

Granite

Phaneritic Felsic Igneous Rock

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)

Vesicular Basalt (Amygdaloidal)

Amygdaloidal Basalt (Mafic volcanic rock)

Vesicular Basalt

Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 (Pyroxene) and (Ca,Na)Al(Al,Si)Si2O8 (Plagioclase Feldspar)

Sandstone (Cross-bedded Drill Core)

Clastic Sedimentary Rock (primarily SiO2)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt

Basalt (Mafic volcanic rock)

Basalt

Extrusive Mafic Igneous Rock

Grey Basalt Pebble

Basalt (Aphanitic Mafic Volcanic Rock)

Basalt

Basalt (composition predominately plagioclase feldspar and pyroxene)

Orange Aventurine (Sunstone-style Quartzite)

Silicon Dioxide (SiO2) with Goethite or Hematite inclusions

Basalt River Pebble

Basalt

Quartzite

Quartzite (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble

Metamorphic Quartz (SiO2)

Quartzite (River Pebble)

Metamorphic Quartzite (SiO2)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Porphyritic Basalt

Porphyritic Mafic Extrusive Rock

Jasper and Quartz River Pebble

Silicon Dioxide (SiO2) with impurities

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

Basalt River Stone

Basalt (Aphanitic Mafic Volcanic Rock)

Sandstone (likely River-tumbled Picture Sandstone)

Arenite (predominantly SiO2 with iron oxide impurities)

Greenschist / Greenstone

Greenschist facies metabasite

Basalt (Road Gravel)

Aphanitic mafic volcanic rock (various compositions of plagioclase feldspar and pyroxene)

Pink Granite

Granite (Felsic Plutonic Rock)

Pink Stained Rock (Likely Quartzite or Sandstone with Iron Oxide Staining)

Quartzite (metamorphic) or Sandstone (sedimentary); coloration likely due to hematite or other iron oxides.

Basalt

Extrusive mafic igneous rock

Amygdaloidal Basalt

Amygdaloidal Basalt (extrusive volcanic rock with secondary mineral infilling)