Igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt (with possible iron oxide staining)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Granite

Granite (silica-rich intrusive igneous rock)

Pink Granite

Granite (Phaneritic igneous rock rich in Orthoclase)

Granite (Dioritic or Hornblende-rich)

Phaneritic Plutonic Felsic to Intermediate Igneous Rock

Basalt with Granite Inclusions (Xenoliths)

Mafic igneous rock (Basalt) with Sialic minerals

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Granite (Pink/Red)

Phaneritic Igneous Rock (Rich in K-Feldspar)

Granite

Granite (Phaneritic Quartz-Feldspar Igneous Rock)

Crushed Stone (Basalt/Gabbro)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt Column Section

Columnar Basalt (Mafic Extrusive Igneous Rock)

Diorite

Phaneritic Intrusive Igneous Rock (Intermediate Composition)

Scoria

Extrusive Igneous Rock (Basaltic/Andesitic Composition)

Vesicular Basalt (Scoria)

Aphanitic Mafic Igneous Rock (Vesicular Basalt)

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Pumice

Pumice (a highly vesicular extrusive igneous rock)

Pumice

Pumice (Vesicular felsic extrusive igneous rock)

Granite (with Orthoclase and Quartz)

Phaneritic Felsic Igneous Rock (KAlSi3O8 + SiO2)

Vesicular Rhyolite

Extrusive igneous rock (high-silica rhyolite)

Basalt (with possible Olivine inclusions)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Pumice

Pumice (a highly vesicular extrusive igneous rock)

River Basalt (Cobble)

Mafic Igneous Rock (Fine-grained Basalt)

Vesicular Basalt

Aphanitic Mafic Igneous Rock (with Vesicular Texture)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Veined Quartz

SiO2 (Silicon Dioxide)

Garnet (likely Almandine or a blend)

Garnet group: X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+. Given the dark, somewhat reddish-brown appearance in the image, it's likely Almandine (Fe3Al2(SiO4)3) or a mix with other iron-rich garnets.

Granite

Granite (a felsic intrusive igneous rock)

Basalt with Caliche Crust

Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating

Basalt with Scoria/Vesicular Texture

Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Granite Cobble (River Stone)

Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)

Basalt

Mafic Igneous Rock (composed primarily of plagioclase feldspar and pyroxene)

Pink Granite (Potassium-rich Granite)

Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O)

Basalt

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Granite Cobble

Granite (Phaneritic igneous rock composed of Quartz, Feldspar, and Mica)

River Pebble (Gabbro or Basalt)

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Granite

Felsic Intrusive Igneous Rock (SiO2, Al2O3, K2O, Na2O)

Red Granite

Felsic intrusive igneous rock (K-feldspar rich Granite)

Granite Cobble

Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Pink Granite

Phaneritic Felsic Igneous Rock (Granite, rich in Potassium Feldspar)

Basalt with Plagioclase Feldspar

Basalt (mafic extrusive igneous rock) with plagioclase feldspar phenocrysts