Painted River Rock
Polished fluvial clast with acrylic/synthetic pigment coating
Sedimentary or Metamorphic (base substrate)
Category
Rock
Browse rock specimens identified by the Rock Identifier community.
Granite Pebble
Intrusive Igneous Rock (Quartz, Feldspar, Mica)
igneous
Rhinestone
Artificial Glass/Crystal
gemstone
Granitic Pegmatite (with Smoky Quartz and Mica)
Granitic Pegmatite (composed of SiO2, KAl2(AlSi3O10)(OH)2, and (K,Na)(AlSi3O8))
igneous
Limonite (Ironstone Concretion)
Limonite: FeO(OH)·nH2O
sedimentary
River Rock (Basalt)
Aphanitic Basaltic Rock
igneous
Shale
Sedimentary Shale
sedimentary
Shale and Pebble Fragment
Sedimentary Rock (Mudstone/Shale with Silica Pebble)
sedimentary
Mudstone
Argillite / Siliciclastic sedimentary rock
sedimentary
River Rock (likely Basalt or Greywacke)
Basalt or Lithic Sandstone
Igneous or Sedimentary (water-worn)
Unakite
Epidote-Feldspar rock
Metamorphic Rock
Wishing Stone (Basalt/Metabasalt with Quartz-Feldspar Vein)
Veined Metabasalt / Veined Greywacke
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Quartzite-rich River Pebble)
Silicon Dioxide (SiO2)
sedimentary
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Quartzite with Calcite Accretion
Metamorphosed Quartz Sandstone (SiO2 with CaCO3 coating)
metamorphic
Crushed Limestone
Calcium Carbonate (CaCO3)
Sedimentary
Banded Sandstone
Arenite with Liesegang banding
sedimentary
Quartz Geode Segment
Crystalline Silicon Dioxide (SiO2)
mineral
Agate Geode Slice (with Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Banded Agate
SiO2 (Silicon Dioxide)
mineral
Granite (Background) and Quartzite/River Pebble (Foreground Heart)
Phaneritic Felsic Igneous Rock (Granite background)
igneous
Greenschist
Greenschist (chlorite-epidote schist)
metamorphic
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Arenite
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Yellow Jasper/Quartzite Pebble)
Microcrystalline Silicon Dioxide (SiO2)
sedimentary
Quartzite Cobble
Quartzite (primarily SiO2)
metamorphic
River Rock (Greywacke/Sandstone)
Arenite / Lithic Sandstone
sedimentary
Spessartine Garnet in Quartz/Feldspar Pegmatite
Spessartine (Mn3Al2(SiO4)3) in Quartz (SiO2) and Feldspar
Mineral in Igneous Rock
Quartz Vein in Basalt or Sedimentary Host Rock
Silica-veined lithic fragment (SiO2 in host matrix)
sedimentary
Unakite
Epidotized Granite
metamorphic
Quartz Vein in Host Rock (Pebble)
Quartz (SiO2) with sandstone or siltstone matrix
metamorphic/igneous transition
Sandstone with Quartz Sphere
Arenite (SiO2-rich sedimentary rock) with Quartzite/Rose Quartz sphere
sedimentary
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Granite
Granite
Igneous
River Pebble / Quartzite Rock
Metamorphic Quartzite (primarily SiO2)
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Fossiliferous Rock (Invertebrate Fossil in Matrix)
Fossiliferous limestone or shaly matrix containing skeletal fossil remains
fossil
Granite
Intrusive Igneous Rock
igneous
Andesite Porphyry
Andesite (extrusive volcanic rock)
igneous