Igneous Rock

Basalt

Basalt (Vitreous to Fine-grained Extrusive Igneous Rock)

Pink Granite

Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)

Granitic Pegmatite

Granite Pegmatite (coarse-grained intrusive igneous rock)

Milky Quartz with Country Rock contact

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

Vesicular Basalt / Scoria

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Basalt

Mafic Igneous Rock (composed of plagioclase feldspar and pyroxene)

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Pink Granite

Felsic intrusive igneous rock (composition: SiO2 and Al2O3)

Granite

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

Basalt

Mafic Igneous Rock (composed primarily of pyroxene and plagioclase)

Vesicular Basalt with Secondary Mineral Inclusions

Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt (Crushed Roadstone)

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Basalt River Stone

Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Giallo Ornamental Granite

Phaneritic Igneous Rock (composed of Quartz, Feldspar, and Mica)

Granite

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

Vesicular Basalt with Magnetite/Hematite

Mafic Extrusive Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt (Water-worn pebble)

Mafic Igneous Rock (primarily Plagioclase feldspar and Pyroxene)

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Granite Pebble

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica/amphibole)

Pink Granite

Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)

Basalt with Iron Oxidation

Extrusive Mafic Igneous Rock (composed of Plagioclase and Pyroxene)

Granite

Granite (a common term for a felsic intrusive igneous rock)

Basalt with Peridotite Xenolith

Mafic Igneous Rock with Peridotite Inclusion (Olivine-rich)

Pink Granite

Granite (Phaneritic igneous rock rich in Alkali Feldspar)

Basalt

Mafic igneous rock (primarily Plagioclase feldspar and Pyroxene)

Pink Granite

Phaneritic intrusive igneous rock (K-feldspar rich)

Granite with Orthoclase and Hematite Staining

Phaneritic Felsic Igneous Rock (primarily SiO2 with KAlSi3O8)

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Granite

Phaneritic plutonic igneous rock (mostly SiO2 and Al2O3)

Granite

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

River Cobble (likely Metasedimentary or Basalt)

Metamorphosed Siltstone or Altered Fine-grained Igneous Rock

Vesicular Basalt (Scoria)

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Basalt with Quartz Infill

Aphanitic Mafic Igneous Rock with Silica (SiO2) inclusion

Basalt

Mafic Igneous Rock (composed primarily of Plagioclase and Pyroxene)

Olivine-bearing Basalt / Scoria

Mafic Igneous Rock (primarily (Mg, Fe)2SiO4)

Basalt with Caliche

Extrusive Mafic Igneous Rock with Secondary Carbonate Crust

Ruby in Zoisite

Anyolite (composite of Corundum and Zoisite)

Granite (Pink/Potassium Feldspar rich)

Granite (K-feldspar rich intrusive igneous rock)

Pink Granite

Phaneritic Felsic Igneous Rock (high K-feldspar)

Feldspathic Granite (likely Syenite or Granite Pegmatite)

Phaneritic Acidic Igneous Rock (KAlSi3O8 dominant with SiO2)

Porphyry

Porphyritic Igneous Rock (likely Porphyritic Andesite or Basalt)