Banded Gneiss with Quartz Vein
Foliated Metamorphic Rock (Gneiss)
Category
Browse mineral on igneous rock specimens identified by the Rock Identifier community.
Banded Gneiss with Quartz Vein
Foliated Metamorphic Rock (Gneiss)
Diorite (Polished Cobble)
Diorite (Intermediate intrusive igneous rock)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Basalt with Quartz Veins
Basalt (complex silicate) with Quartz (SiO2) intrusions
Diorite
Diorite (Intermediate intrusive igneous rock)
Pink Granite
Phaneritic intrusive igneous rock (K-feldspar rich)
Gneiss
Gneiss
Banded Agate (Onyx type)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Granite
Granite (Felsic Intrusive Igneous Rock)
Gneiss
Gneissic Metamorphic Rock
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Sodalite
Na8(Al6Si6O24)Cl2
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
Basalt with Quartz Veins
Basalt (SiO2 range 45-52%)
Pink Granite
Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Schist
Chlorite/Mica Schist
Clear Quartz
Silicon Dioxide (SiO2)
Basalt with Vesicular Texture
Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
Sunstone
Oligoclase or Andesine (Labradorite) Feldspar (Na,Ca)(Si,Al)4O8
Quartz (specifically Citrine or Yellow Quartz)
Silicon Dioxide (SiO2)
Smoky Quartz (Tumbled)
Silicon Dioxide (SiO2)
White Agate (Chalcedony)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Granite
Course-grained intrusive igneous rock
Amphibolite (specifically Hornblende Schist/Gneiss)
Amphibole-rich Metamorphic Rock
Coarse-grained Granite
Phaneritic Granite (contains Quartz, Feldspar, and Mica)
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Coarse-grained Quartz with Feldspar inclusions
Crystalline Quartz (SiO2) with Orthoclase/Plagioclase Feldspar inclusions
Pink Granite
Phaneritic Felsic Igneous Plutonic Rock
Scoria (Vesicular Basalt)
Scoria (Extrusive Igneous Rock)
Granite
Granite (High-silica plutonic rock)
Flower Agate
Chalcedony (Silicon Dioxide, SiO2) with Opaque Spherulitic Inclusions
Biotite Gneiss
Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)
Granite
Phaneritic Acidic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
Rose Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Quartz (Pebble)
Quartz (SiO₂)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)