Mineral In Igneous Rock

Basalt

Extrusive mafic igneous rock

Vesicular Basalt

Extrusive mafic igneous rock

Basalt

Extrusive Mafic Igneous Rock

Basalt (River Pebble)

Extrusive Mafic Igneous Rock

Quartz (River Stone)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Gneiss (specifically Micaceous Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Porphyritic Basalt (Amygdaloidal)

Porphyritic Mafic Volcanic Rock (Amygdaloidal Basalt)

Blue Lace Agate (Geode/Druzy variant)

Chalcedony (SiO2) with Quartz druzy

Basalt (River Cobble)

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

Cloudy Quartz

Quartz (Silicon Dioxide, SiO2)

Bull Quartz (Milky Quartz)

Quartz (Silicon Dioxide - SiO2)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Foliated Gneiss (River-Worn Pebble)

Gneiss (High-grade Regional Metamorphic Rock)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Basalt

Basalt (Extrusive Igneous Rock)

Basalt (River Pebble)

Extrusive mafic igneous rock

Basalt (River Stone)

Extrusive mafic igneous rock

Basalt Pebble

Extrusive mafic igneous rock

Basalt (Vesicular)

Extrusive mafic igneous rock

Basalt (River Pebble)

Extrusive Mafic Igneous Rock

Basalt Pebble

Extrusive Mafic Igneous Rock

Basalt Water-Worn Pebble

Aphanitic Mafic Igneous Rock

Basalt (River Pebble)

Extrusive mafic igneous rock

Basalt

Mafic extrusive igneous rock

Basalt (Polished River Stone)

Aphanitic Mafic Igneous Rock

Basalt

Extrusive mafic igneous rock

Basalt

Extrusive mafic igneous rock

Basalt Pebble

Extrusive Mafic Igneous Rock

Basalt

Extrusive mafic igneous rock

Amethyst

Silicon dioxide (SiO2) with iron impurities

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Greenschist (Greenstone)

Greenschist

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Gneiss

Gneiss

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Bornite

Bornite (Cu5FeS4)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Granite

Intrusive Igneous Rock (composed primarily of Quartz: SiO2, Feldspar: KAlSi3O8, and Mica: KAl2(AlSi3O10)(OH)2)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)