Rhyolite
Rhyolite
igneous
Category
Granite
Browse granite specimens identified by the Rock Identifier community.
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Granite featuring Quartz Vein
Phaneritic Felsic Igneous Rock (Quartz, Orthoclase Feldspar, Mica)
igneous
Rhyolite
Rhyolite (High-silica volcanic rock)
igneous
Granite / Gneiss Complex
Felsic Plutonic Rock (Granite) or High-grade Metamorphic Rock (Gneiss)
igneous/metamorphic
Zircon
Zircon (Zirconium Silicate, ZrSiO4)
mineral
Crushed Stone (Likely Limestone or Granite)
Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite
sedimentary or igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Porphyritic Rhyolite
Porphyritic Rhyolite (Felsic volcanic rock)
igneous
Rhyolite
Rhyolite (High-silica volcanic rock)
igneous
Artificial Rock Face (Faux Rock)
Glass Fiber Reinforced Concrete (GFRC)
man-made/construction material
Granite (Light-colored quartz/feldspar variety)
Granite (composed primarily of Quartz SiO2 and Feldspar KAlSi3O8)
igneous
Giallo Ornamental Granite
Phaneritic Igneous Rock (composed of Quartz, Feldspar, and Mica)
igneous
Quartz (Milky or Smoky Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Diorite
Diorite
igneous
Smoky Quartz Geode Slice
Silicon Dioxide (SiO2)
mineral
Granite River Cobble
Phaneritic Felsic Igneous Rock
igneous
Granite Water-Worn Pebble
Phaneritic intrusive igneous rock (Felsic)
igneous
Granitic Gneiss
Gneiss (Metamorphic rock predominantly containing quartz, K-feldspar, and plagioclase)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Raw Topaz
Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2
mineral
Black Tourmaline (Schorl)
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe2+3Al6Si6O18(BO3)3(OH)3OH
mineral
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Amazonite
K(AlSi3O8) - Potassium Feldspar (Microcline variant)
mineral
Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Biotite / Black Mica
Biotite K(Mg,Fe)3AlSi3O10(F,OH)2
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Smoky tumble)
Crystalline Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss
metamorphic
Quartz (Crystal Cluster)
Silicon Dioxide (SiO2)
mineral
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
mineral
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral