Mineral On Igneous Rock

Granite

Phaneritic Plutonic Rock (High Silica content)

Quartz Crystal

Quartz (SiO₂)

Basalt

Mafic volcanic rock, primarily composed of Plagioclase, Pyroxene, and Olivine

Clear Quartz (Rock Crystal)

Quartz (SiO₂)

Sandstone

Sandstone (clastic sedimentary rock)

Granite

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

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)

Granodiorite

Phaneritic intrusive igneous rock (Granodiorite)

Basalt (Polished)

Basalt (Mafic Extrusive Igneous Rock)

Quartz (likely a weathered/tumbled piece)

Quartz (SiO₂)

Pink Granite

Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)

Gneiss (Metamorphic Rock)

Gneiss

Yellow Quartz (Citrine/Yellow Jasper mix)

Silicon Dioxide (SiO2) with iron oxide inclusions

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Granite (specifically Pink Granite)

Phaneritic Plutonic Rock (High Potassium Feldspar Granite)

Pink Granite

Phaneritic plutonic rock (dominated by Alkali Feldspar)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Granite

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

Magnetite

Iron(II,III) oxide (Fe3O4)

Unakite

Unakite (Epidotized Granite)

Granite (Pink/Red variety)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Basalt with Plagioclase Feldspar

Basalt (mafic extrusive igneous rock) with plagioclase feldspar phenocrysts

Granite Cobble

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Labradorite

Labradorite (a variety of Plagioclase Feldspar), Na(AlSi3O8) to Ca(Al2Si2O8)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Coal (specifically Bituminous or Anthracite)

Organic sedimentary rock; primarily Carbon (C) with varying H, S, O, N

Basalt River Stone

Basalt

Gneiss (specifically a Banded Gneiss pebble)

Gneiss (High-grade Regional Metamorphic Rock)

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Muscovite Mica

Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2

Basalt with Weathered Rind

Basalt (Aphanitic Mafic Igneous Rock)

Basalt (River or Beach Pebble)

Basalt (Mafic Extrusive Igneous Rock)

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Road Aggregate)

Basalt (Aphanitic Mafic Igneous Rock)

Diorite (or salt-and-pepper granite pebble)

Phaneritic Igneous Rock (Intermediate Composition)

Granite Cobble

Phaneritic Felsic Igneous Rock (Granite)

Unakite

Epidotized Granite

Basalt

Mafic Igneous Rock (composed of plagioclase feldspar and pyroxene)