Sandstone
Arenite (SiO2 principal)
sedimentary
Category
Sedimentary Rock (Possibly Composed Of Various Minerals)
Browse sedimentary rock (possibly composed of various minerals) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Possibly Composed Of Various Minerals) in the encyclopedia
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Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
mineral
Weathered green-gray stone, likely serpentinite or chlorite-rich metamorphic rock
Probable serpentinite (antigorite–lizardite), possibly chlorite schist or altered basalt
metamorphic
Serpentinite
Serpentinite (a rock composed predominantly of serpentine group minerals)
metamorphic
Sandstone
Sedimentary quartz arenite
sedimentary
Limonite (Ironstone)
Limonite (FeOO·nH2O)
mineral
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Sandstone
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Coquina / Shelly Sandstone
Calcareous Sandstone / Coquina
sedimentary
Schist
Schist (various mineral compositions)
Metamorphic
Sandstone
Arenite (SiO2 primarily)
sedimentary
Coquina / Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
Sedimentary
Fossil Shark Tooth
Phylum Chordata, Class Chondrichthyes (Possibly Cretalamna or Otodus)
fossil
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Chalcedony Pebble
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Dalmatian Jasper (or Dalmatian Stone)
Dalmatian Stone (A peralkaline felsite composed of feldspar, quartz, and sodic amphibole)
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Mookaite Jasper
Silicon Dioxide (SiO2) - Radiolarite
sedimentary
Rough Apatite in Matrix
Fluorapatite / Chlorapatite / Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Weathered quartz-rich pebble, possibly milky quartz or chalcedony
Quartz, SiO₂; exact variety uncertain from the image
mineral
Granite / Diorite (Granodiorite)
Granodiorite / Quartz Diorite
igneous
Quartz (Rose Quartz or Chert variant)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Shark Tooth Fossil
Chondrichthyes fossil
fossil
Fossilized Insect in Nodular Matrix
Invertebrata / Insecta fossil in sedimentary concretion
fossil
Granodiorite
Granodiorite
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Siltstone with Quartz Vein
Siltstone (composed of Quartz and Clay minerals) with a hydrothermal Quartz vein (SiO2)
sedimentary
Granite
Granite (plutonic igneous rock)
igneous
Weathered gray-green pebble
Indeterminate; possibly altered basalt, serpentinite, or a greenish metamorphic rock
mineral
Granite (Weathered)
Phaneritic Felsic Igneous Rock
Igneous
Sandstone
Arenite
sedimentary
Greywacke (Stream Pebble with Quartz/Calcite Veins)
Greywacke sandstone / Metagraywacke
sedimentary
Marble
Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.
Metamorphic Rock
Clear Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Iron-rich breccia or weathered ironstone
Goethite–hematite-bearing limonite, possibly brecciated host rock
mineral
Quartz-rich rock, likely chert or chalcedony
Microcrystalline silica (SiO₂), possibly quartz/chalcedony
mineral