Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Category
Sedimentary Rock Or Mineral (Depending On Origin And Purity)
Browse sedimentary rock or mineral (depending on origin and purity) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock Or Mineral (Depending On Origin And Purity) in the encyclopedia
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Fossil-bearing Sedimentary Rock
Sedimentum cum fossili
fossil
Mudstone/Siltstone with Liesegang Bands
Argillaceous Sedimentary Rock with Chemical Banding
sedimentary
Green faceted gemstone, likely emerald or synthetic emerald
Beryl, Be₃Al₂Si₆O₁₈, colored green by chromium and/or vanadium; identity cannot be confirmed visually
gemstone
Brecciated rock, likely polymict breccia
Polymict breccia; exact lithology cannot be determined from the image
sedimentary
Milky quartz-bearing rock, likely quartzite or silicified limestone
Quartz (SiO₂), possibly in a quartzite or chalcedony-rich matrix
metamorphic
Blue Sapphire
Corundum (Al2O3)
gemstone
Red-brown iron-rich rock, likely hematite-bearing basalt or ironstone
Provisional identification: hematite (Fe₂O₃)-stained mafic rock; possibly weathered basalt or ferruginous chert
igneous
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with iron oxide Fe2O3 staining)
sedimentary
Gravel or Crushed Stone
Fragmented Aggregate Stone
sedimentary or igneous fragment
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Polished green-and-white stone, possibly serpentine or jade
Tentatively serpentine (Mg₃Si₂O₅(OH)₄) or nephrite jade (interlocking amphibole fibers)
mineral
Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Banded Rock (likely Quartz-rich)
Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals
Mineral
Sandstone
Arenite
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone and Gravel Aggregate
Clastic Sedimentary Rock / Quartzose Sandstone
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Shungite
Fullerene-bearing carbonaceous rock
mineral
Caribbean Calcite
Calcium Carbonate with Argonite (CaCO3)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Banded Sandstone (River Cobble)
Arenite Sandstone with heavy mineral layering
sedimentary
Clear/White Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Fluorite on Matrix
Calcium Fluoride (CaF2)
mineral
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Fossilized Shell Impression / Siltstone Fossil
Bivalvia / Brachiopoda mold in Siltstone
fossil
Fluorite with Quartz coating
Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
mineral
Likely greenstone (metamorphosed basalt)
Metabasalt; commonly composed of chlorite, actinolite, epidote, and albite
metamorphic
Quartz Druzy
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Seashell Fossil
Gastropoda fossil
fossil
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Arenite (SiO2 with various cementing minerals)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Sandstone
Arenite (predominantly SiO2)
sedimentary