Banded Gneiss with Quartz Vein
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Category
Minerals
Browse minerals specimens identified by the Rock Identifier community.
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Granite
Granite (Felsic Plutonic Rock)
igneous
Dyed Blue Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Schist
Mica Schist
metamorphic
Gneiss
Foliated Metamorphic Gneiss
metamorphic
Diamond (Cluster Ring)
Carbon (C)
mineral
Gneiss
Gneiss
metamorphic
Granite (Pink/Potassium Feldspar Granite)
Felsic Plutonic Rock (Potassium Feldspar, Quartz, Mica, and Amphibole)
igneous
Diamond (Faceted)
Carbon (C)
mineral
Gneiss
Foliated Metamorphic Rock
metamorphic
Granite
Granite (Phaneritic Quartz-Feldspar Igneous Rock)
igneous
Pink Granite
Phaneritic Plutonic Felsic Rock (Granite)
igneous
Greenstone / Diorite
Intermediate plutonic igneous rock
igneous
Serpentine
Antigorite, Lizardite, or Chrysotile; (Mg, Fe)3Si2O5(OH)4
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Granite
Phaneritic intrusive igneous rock
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Granite
Granite (Phaneritic Quartz-Feldspar Rock)
igneous
Diorite (Salt and Pepper Rock)
Diorite
igneous
Diamond
Diamond (pure native carbon, C)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Banded Iron Formation (BIF)
Banded Iron Formation (principally Hematite/Magnetite and Chert)
sedimentary
Granite
Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)
igneous
Gneiss
Gneiss
metamorphic
Unakite
Epidotized Granite
metamorphic
Gneiss
Gneiss
metamorphic
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Granite
Granite (phaneritic intrusive felsic igneous rock)
igneous
Yellow Quartz (Citrine-colored Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic intrusive igneous rock (primarily SiO2)
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Diorite (Salt and Pepper Rock)
Phaneritic plutonic igneous rock (sodium-rich plagioclase feldspar and hornblende)
igneous
Feldspar-rich Pegmatite
Granitic Pegmatite (principally KAlSi3O8)
igneous
Fossilized Shark Tooth (Sand Tiger)
Carcharias taurus (fossil specimen)
sedimentary
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
mineral
Moqui Marble
Ironstone Concretion (Goethite/Hematite shell with Sandstone core)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Siltstone
Siltstone
sedimentary
Pegmatite
Granitic Pegmatite
igneous
Schist
Mica Schist
metamorphic