Igneous

Granite

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

Granite Pebble

Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)

Pink Granite

Granite (Phaneritic intrusive igneous rock dominated by Quartz and K-Feldspar)

Sodalite-rich Syenite (Yooperlite)

Sodalite-rich Syenite (Na8(Al6Si6O24)Cl2 within an igneous matrix)

Granite (Weathered)

Phaneritic Felsic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)

Basalt (River Cobble)

Mafic Igneous Basalt (composed primarily of Plagioclase feldspar, Pyroxene, and Olivine)

Granite (Weathered/Oxidized)

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

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene) with CaCO3 veins

Dalmatian Stone

Dalmatian Stone (a peralkaline igneous rock consisting of Feldspar, Quartz, and Arfvedsonite)

Granite

Phaneritic Plutonic Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)

Basalt River Pebble

Extrusive mafic igneous rock; primarily composed of Plagioclase Feldspar and Pyroxene

Granite

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

Granite

Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O, Na2O)

Pink Granite

Phaneritic intrusive igneous rock with Potassium Feldspar (KAlSi3O8) and Quartz (SiO2)

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Tourmaline (likely Schorl)

Tourmaline Group Mineral (e.g., Schorl for black varieties); (Na,Ca)(Li,Mg,Fe,Mn,Al)3Al6(BO3)3Si6O18(OH)4

Pink Feldspar with Quartz

Potassium Feldspar (Orthoclase) with SiO2

Peridotite (with Olivine)

Peridotite (dominantly (Mg, Fe)2SiO4)

Olivine (Peridotite)

(Mg, Fe)2SiO4 (Magnesium Iron Silicate)

Granite or Granodiorite (Weathered)

Granite

Red Granite

Potassium-feldspar rich Granite

Granite

Granite

Granodiorite

Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Granodiorite

Granodiorite

Snowflake Obsidian

Vitreous volcanic rock with Cristobalite inclusions (mostly SiO2)

Obsidian

Volcanic Glass (SiO2)

Obsidian

Obsidian (Volcanic Glass)

Black Obsidian

Volcanic Glass (SiO2 + impurities)

Granite

Granite (a felsic intrusive igneous rock)

Granodiorite

Granodiorite (intermediate intrusive igneous rock containing plagioclase, quartz, and K-feldspar)

Granodiorite (River Rock / Cobble)

Granodiorite; Phaneritic intrusive igneous rock dominated by plagioclase, quartz, and hornblende/biotite

Granite

Phaneritic Intrusive Igneous Rock (primarily composed of SiO2, Al2O3, K2O, Na2O)

Red Granite

Phaneritic Felsic Intrusive Igneous Rock (primarily K-feldspar, Quartz, and Biotite)

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)

Porphyritic Rhyolite or Andesite (Porphyry)

Porphyritic igneous rock (Composition depends on exact mineralogy, often Rhyolite or Andesite)

Gabbro

Phaneritic Basic Igneous Rock (composed primarily of pyroxene and calcium-rich plagioclase)

Pink Granite

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

Pink Granite

Granite (Phaneritic igneous rock composed mainly of quartz, alkali feldspar, and plagioclase)

Granite

Phaneritic intrusive igneous rock (consisting mainly of Quartz, Alkali Feldspar, and Plagioclase)

Granite Pebble

Granite (Phaneritic intrusive igneous rock consisting of Quartz, Alkali Feldspar, and Plagioclase)

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)