Granite Pebble
Phaneritic Felsic Igneous Rock
Category
Browse mineral on igneous rock specimens identified by the Rock Identifier community.
Granite Pebble
Phaneritic Felsic Igneous Rock
Greenstone / Basalt with Amygdule
Amygdaloidal Basalt (altered to Greenstone)
Pink Granite
Phaneritic Felsic Igneous Rock
Banded Gneiss
Gneiss (Metamorphic Rock)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Granite Cobble
Granite (Phaneritic igneous rock)
Dalmatian Jasper
Peralkaline rhyolite with Arfvedsonite inclusions
Quartz Pebble (with Feldspar/Mica)
Granitic Quartz / SiO2 with KAlSi3O8
Milky Quartz
Silicon Dioxide (SiO2)
Granite
Phaneritic plutonic rock (SiO2 + Al2O3)
Gneiss
Gneiss (High-grade metamorphic rock)
Granite
Granite (Phaneritic Igneous Rock)
Granite
Phaneritic Igneous Rock (Granite)
Granite (Weathered River Rock)
Granite (Phaneritic Igneous Rock)
Granite
Plutonic felsic igneous rock
Mixed mineral and rock collection
Predominantly quartz varieties, including amethyst, plus likely calcite, feldspar, mica, and miscellaneous polished stones
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
Milky Quartz
Silicon Dioxide (SiO2)
Dark weathered igneous rock, likely basalt
Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine or iron oxides
River Stone (likely Basalt or Greywacke)
Basalt with mineral veining
Quartz
Silicon Dioxide (SiO2)
Granite Pebble
Granite (Felsic intrusive igneous rock)
K2 Jasper (Beads)
Granodiorite with Azurite and Malachite
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Gneiss
Foliated Metamorphic Rock
Epidote and Quartz in Basalt
Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt
Labradorite
Labradorite (Ca, Na)(Al, Si)4O8
Porphyritic Basalt
Basalt (Extrusive Igneous Rock)
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)
Granite Pebble
Granite (Plutonic Igneous Rock)
Schist
Schist
Milky Quartz
Silicon Dioxide (SiO2)
Granite
Granite (Felsic Plutonic Rock)
Granite
Intrusive Igneous Rock (composed primarily of quartz, alkali feldspar, and plagioclase)
Basalt
Mafic Igneous Rock
Granite
Plutonic Igneous Rock (composed typically of SiO2, Al2O3, K2O, Na2O, CaO)
Granite
Granite (a plutonic rock)
Quartz Crystal Point
Silicon Dioxide (SiO2)
Granite-like granitic rock
Crystalline plutonic rock, primarily quartz, feldspar, and mica/amphibole
Quartz Pebble
Silicon Dioxide (SiO2)
Granite
Plutonic felsic rock (Quartz, Feldspar, Mica)