Granodiorite (Gneissic texture)
Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)
igneous
Category
Mineral Based Alloy (Anthropogenic)
Browse mineral based alloy (anthropogenic) specimens identified by the Rock Identifier community.
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Granite
Granite (Phaneritic Igneous Rock)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Feldspar-rich Quartzite
Metamorphic Quartz-Feldspar Aggregate (SiO2 + KAlSi3O8)
metamorphic
Coquina
Biogenic Limestone (CaCO3)
sedimentary
Basalt
Extrusive mafic igneous rock
igneous
Basalt Beach Pebble
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Basalt
Basalt
igneous
Granodiorite
Granodiorite (Intermediate to Felsic Intrusive Rock)
igneous
Basalt Water-Worn Pebble
Aphanitic Mafic Igneous Rock
igneous
Basalt Pebble
Basalt
igneous
Basalt
Basalt
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Basalt
Basalt (Mafic volcanic rock)
igneous
Granite
Plutonic Granite
igneous
Granite
Phaneritic plutonic felsic igneous rock
igneous
Granite
Granite (High-silica plutonic rock)
igneous
Basalt
Basalt
igneous
Basalt
Basalt (Extrusive Mafic Igneous)
igneous
Granite
Granite (Phaneritic igneous rock)
igneous
Granite Pebble
Granite (Phaneritic intrusive igneous rock consisting of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Granite Cobble
Phaneritic Felsic Igneous Rock
igneous
Basalt
Extrusive mafic igneous rock
igneous
Limestone (specifically Iron-stained or Argillaceous Limestone)
Calcium Carbonate (CaCO3) with Iron Oxide (Fe2O3) impurities
sedimentary
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Granite
Granite (Felsic intrusive igneous rock)
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Chert Concretion with Iron Oxide Staining
Microcrystalline Quartz (SiO2)
sedimentary
Basalt Scoria
Vesicular Basalt
igneous
Basalt (Weathered)
Extrusive Igneous Rock (Mafic composition)
igneous
Basalt (Vesicular/Scoria)
Basalt (Extrusive Mafic Rock)
igneous
Crushed Limestone
Calcium Carbonate (CaCO3)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Limestone (Micrite/Chalky variety)
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Basalt (Weathered Pebble)
Extrusive mafic rock (primarily Plagioclase Feldspar and Pyroxene)
igneous
Granodiorite Pebble
Granodiorite
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Limestone (specifically Dolomitic/Crystalline Limestone)
Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)
sedimentary
Granite
Granite
igneous