Granite
Phaneritic plutonic rock (primarily Quartz, Alkali Feldspar, and Plagioclase)
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.
Granite Pebble
Granite (Phaneritic Acidic Igneous Rock)
igneous
Sandstone (Muddy/Silty Variety)
Arenite with high silt/clay content (clastic sedimentary rock)
sedimentary
Orange Quartzite (Tumbled)
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
sedimentary
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Quartzite / Sandstone / Chert Mix
Silicon Dioxide (SiO2)
sedimentary and metamorphic
Granodiorite (containing Biotite and Quartz)
Granodiorite (Plagioclase-rich phaneritic intrusive rock)
igneous
Granite
Granite
igneous
Sandstone (Ferruginous Concretion)
Ferruginous Sandstone Concretion / SiO2 with Fe2O3 cement
sedimentary
Sandstone Concretion
Clastic Sedimentary Concretion (primarily SiO2 with Fe2O3 cement)
sedimentary
Granodiorite
Phaneritic Plutonic Rock - Granodiorite
igneous
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
sedimentary
Diorite
Phaneritic Intermediate Igneous Rock
igneous
Granodiorite
Granodiorite (intermediate plutonic rock)
igneous
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Pink Granite
Granite (Felsic Plutonic Rock)
igneous
Diorite
Diorite (plutonic igneous rock)
igneous
Greywacke (River Slikenside)
Greywacke (Lithic Sandstone)
sedimentary
Granite
Granite (Phaneritic igneous rock)
igneous
Granodiorite
Granodiorite
igneous
Granite
Granite (Phaneritic Quartz-Feldspar rock)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Diorite
Diorite (an intrusive igneous rock)
igneous
Weathered Volcanic Rock (possibly Rhyolite or Andesite Pebble)
Volcanic rock (e.g., Rhyolite or Andesite, specific identification would require thin section analysis or chemical assay). Mineral composition: Primarily feldspars (orthoclase and/or plagioclase), quartz (in rhyolite), micas, amphiboles, and sometimes pyroxenes.
Igneous, specifically volcanic/extrusive (possibly Rhyolite or Andesite)
Granite
Granite (compositionally: Quartz, Feldspar, Mica)
igneous
Sandstone Concretion
Moqui Marble / Iron-oxide Concretion (SiO2 with Hematite/Goethite)
sedimentary
Diorite
Phaneritic Intermediate Plutonic Rock
Igneous
Diorite
Diorite (Intermediate Plutonic Rock)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite (with Quartz and Mica)
Phaneritic Felsic Igneous Rock
igneous
Ferruginous Sandstone
Clastic Sedimentary Rock (Iron-rich)
sedimentary
Beryl (likely Aquamarine) in matrix
Be3Al2(SiO3)6 (Beryllium Aluminum Silicate)
mineral
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
sedimentary
Pink Granite
Phaneritic Felsic Igneous Plutonic Rock
igneous
Limonitic Quartzite
Metamorphosed sandstone with Limonite (FeO(OH)·nH2O) staining
metamorphic