Shale or Siltstone
Sedimentary Rock (Siliciclastic)
Category
Browse sedimentary rock (possibly a conglomerate or coarse grained sandstone) specimens identified by the Rock Identifier community.
Shale or Siltstone
Sedimentary Rock (Siliciclastic)
Ironstone Concretion (Moqui Marble variety)
Ferruginous Sandstone Concretion
Granite
Granite (a common rock type, not a single mineral; composed primarily of Quartz, Feldspar (Orthoclase and Plagioclase), and Mica (Biotite and/or Muscovite) and/or Amphibole)
Fossil Coral
Coral Limestone (a type of biogenic sedimentary rock)
Weathered Sandstone with Algae Growth
Arenite
Botryoidal Hematite (Iron Stone Conglomerate)
Hematite (Fe2O3) in sedimentary matrix
Fossiliferous Limestone (Coquina / Shell Limestone)
Bioclastic Limestone (CaCO3)
Sandstone with Quartz Veining
Arenite with hydrothermal quartz (SiO2)
Granite
Phaneritic Felsic Igneous Rock (Granite)
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
André Landed Here Rock (Glacial Erratic)
Granodiorite / Diorite (compositional estimate)
Granite (White Granite variant)
Phaneritic Plutonic Rock (High-silica Felsic)
Porphyritic Basalt (Flowerstone)
Porphyritic Basalt (Mafic volcanic rock)
Ironstone Concretion (Moqui Marble type)
Ferruginous Concretion (Fe2O3 / FeO(OH))
Diorite (River Cobble)
Phaneritic Intermediate Plutonic Rock
Granite
Phaneritic Plutonic Felsic Rock
Granodiorite
Granodiorite (Quartz-Feldspar-Biotite Plutonic Rock)
Granite
Granite
Granodiorite
Granodiorite
Shale (Beach-worn)
Laminated Pelite (primarily clay minerals and quartz)
Shale
Fissile mudstone (rich in clay minerals and quartz)
Laterite (iron-rich nodule, possibly Bauxite as a subtype)
Laterite (composed of various minerals including goethite, hematite, gibbsite, etc.)
Granite
Granite (phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)
K2 Azurite Granite / K2 Stone
Granite (igneous rock) with Azurite inclusions (mineral)
Diorite
Diorite (Intermediate intrusive igneous rock)
Granite
Granite (Felsic intrusive igneous rock)
Granite
Granite (Silicic Intrusive Igneous Rock)
Granite
Granite (Felsic intrusive igneous rock)
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
Quartzite (Yellow/Tan)
Metamorphic Rock composed of Quartz (SiO₂)
Quartzite Pebble
Quartzite (SiO2)
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
Granite
Granite (Phaneritic intrusive igneous rock)
Red Granite
Felsic intrusive igneous rock (K-feldspar rich Granite)
Granite
Phaneritic Igneous Rock (composed mostly of Quartz, Feldspar, and Mica)
Granite Pebble
Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)
Glauconitic Sandstone (Greensand)
Glauconitic Quartz Arenite (Formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Quartzite (Milky)
Quartzite (SiO2)
Quartzite
Quartzite (composed mainly of SiO2)
Yellow Quartzite (River Pebble)
Quartzite (SiO2)
Shale
Fissile Siliciclastic Sedimentary Rock