Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Category
Sedimentary Rock (Possibly A Conglomerate Or Coarse Grained Sandstone)
Browse sedimentary rock (possibly a conglomerate or coarse grained sandstone) specimens identified by the Rock Identifier community.
Quartzite
Quartzite (SiO2)
metamorphic
Granodiorite (River Rock / Cobble)
Granodiorite; Phaneritic intrusive igneous rock dominated by plagioclase, quartz, and hornblende/biotite
igneous
Quartz (possibly milky quartz or quartz with inclusions)
SiO2 (Silicon Dioxide)
Mineral
Pink Quartzite
Quartzite (SiO2 with iron oxide inclusions)
metamorphic
Sandstone
Arenite (primarily composed of SiO2)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Intrusive Felsic Igneous Rock
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Pink Granite (River Pebble)
Felsic Intrusive Igneous Rock
igneous
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone with Liesegang Rings
Arenite with Iron Oxide Liesegang Banding
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Granodiorite
Phaneritic intrusive igneous rock (Granodiorite)
igneous
Fossiliferous Sedimentary Rock (Coquina/Limestone)
Fossiliferous Calcarenite / Bioclastic Limestone
sedimentary
Red Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
sedimentary
River Rock (likely Siltstone or fine-grained Sandstone)
Clastic Sedimentary Rock
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Siltstone
Siltstone (primarily composed of SiO2 with various clay minerals)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Banded Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)
sedimentary
Granite
Granite (Felsic Plutonic Rock / SiO2 + Al2O3)
igneous
Granite Cobble
Felsic Intrusive Igneous Rock (Granite)
igneous
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Ferruginous Sandstone (Ironstone)
Sedimentary rock with Limonite/Goethite cement
sedimentary
Diorite (Salt and Pepper Rock)
Diorite
igneous
Siltstone
Siltstone (primarily SiO2 with Al2O3)
sedimentary
Siltstone
Siltstone
sedimentary
Banded Sandstone (Zebra Stone)
Arenite with Iron Oxide Banding (Liesegang rings)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (SiO2 + Fe2O3)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone with Liesegang Rings
Arenite with Iron Oxide Concretions
sedimentary
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Banded Sandstone
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Marble
Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Granite
Phaneritic Intrusive Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Granite
Felsic Intrusive Igneous Rock
igneous
Concretion
Septarian concretion (likely containing Calcite or Siderite)
sedimentary
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Pink Granite
Granite (composed primarily of Quartz, K-Feldspar, and Plagioclase)
igneous
Granodiorite
Granodiorite (intermediate intrusive igneous rock)
igneous