Sandstone
Sandstone (composed predominantly of SiO2)
sedimentary
Category
Mineral On Sedimentary Rock
Browse mineral on sedimentary rock specimens identified by the Rock Identifier community.
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Sandstone
Arenite (primarily SiO2)
sedimentary
Waterworn Pebble / Quartzite
Metamorphic/Sedimentary rock fragment
sedimentary
Foliated metamorphic rock, likely gneiss or mica schist
Quartz–feldspar–mica metamorphic rock; exact identification is uncertain from the photograph
metamorphic
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Sandstone (SiO2 dominated)
sedimentary
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (composed mostly of SiO2)
sedimentary
Limonite (Iron Ore)
Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)
mineral
K-Feldspar (Potassium Feldspar)
Orthoclase / Microcline (KAlSi3O8)
mineral
Sandstone with Quartz Veining
Clastic sedimentary rock (SiO2 dominated)
sedimentary
Red jasper in gray host rock (likely hematite-stained quartzite or rhyolite)
Jasper: microcrystalline quartz (SiO₂), with iron-oxide coloration; exact host uncertain from image
mineral
Rounded gray-green stone, likely fine-grained sandstone or siltstone
Indeterminate clastic sedimentary rock; exact identification requires closer examination
sedimentary
Sandstone Pebble
Sandstone (Quartzose/Feldspathic Sandstone)
sedimentary
Sandstone
Arenite
sedimentary
Muscovite Mica Schist
Metamorphic Rock (Muscovite-Biotite Schist)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Rounded tan pebble
Unidentified fine-grained rock; the image does not show enough detail for a reliable species-level identification.
sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Dalmation Stone (often called Dalmatian Jasper)
Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite
igneous
Dalmatian Stone
Peralkaline rhyolite
igneous
Sandstone
Arenite
sedimentary
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Quartz fragment (Pebble)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
sedimentary
Iron-stained quartz-rich rock (possibly ironstone or ochre-coated quartz)
Undetermined ferruginous rock; yellow-brown coloration likely from goethite and/or limonite (hydrated iron oxides)
sedimentary
Sandstone with Iron Oxide Concretions
Quartzose Sandstone with Limonite/Hematite
sedimentary
Quartz (Moss-covered)
Silicon Dioxide (SiO2)
mineral
Chert / Flint
Cryptocrystalline quartz (SiO2)
Sedimentary
Concretion
Various mineral compositions, typically carbonate or iron oxide cemented sediment
Sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 dominated)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Amber
Fossilized Tree Resin
gemstone
Polished banded gneiss pebble
Gneiss, chiefly quartz–feldspar–mica; exact mineralogy uncertain from image
metamorphic
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary