River Stone (Quartzite/Siltstone mixture)
Silicon Dioxide (SiO2) based metamorphosed sandstone
Category
Browse sedimentary (jasper), mineral (aquamarine) specimens identified by the Rock Identifier community.
River Stone (Quartzite/Siltstone mixture)
Silicon Dioxide (SiO2) based metamorphosed sandstone
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz, SiO2)
Sandstone (Weathered Pebble)
Arenite (primarily SiO2)
Sandstone (Quartzose)
Arenite (SiO2 based)
Sandstone
Arenite (SiO2-rich)
Sandstone (Ferruginous)
Arenite (with iron oxide cement, Fe2O3)
Shale
Fissile Mudstone (Shale)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Red Sandstone
Sandstone (principally Quartz with Iron Oxide coating)
Red Sandstone
Arenite (primarily Quartz with Hematite cement)
Sandstone Beach Pebble
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)
Sandstone
Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)
Gneiss
High-grade regional metamorphic rock (Foliated)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 inclusions)
Sandstone (Quartz Arenite)
Clastic Sedimentary Rock - Quartz Arenite
Druzy Quartz on Limestone
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
Shale
Fissile Mudrock (Clay-rich Sedimentary Rock)
Sandstone (Iron-stained)
Clastic sedimentary rock (SiO2 with Fe2O3 staining)
Sandstone Concretion
Sandstone (Sedimentary Rock) with silica or calcite cement
Milky Quartz in Conglomerate Matrix
Silicon Dioxide (SiO2) within Clastic Sedimentary Rock
Sandstone (likely with Borings or Vesicular Basalt)
Clastic Sedimentary Rock (Sandstone)
Limonite Concretion (Ironstone)
Limonite (FeO(OH)·nH2O) with Goethite and Hematite
Sandstone (Quartzose Pebble)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
Sandstone with Quartz Veining
Clastic sedimentary rock (SiO2 dominated)
Septarian Nodule (Dragon Stone)
Septarian concretion (composition: CaCO3 - Calcite, Aragonite, and Siderite/Limestone)
Petrified Wood
Silicified Wood (SiO2)
Quartz (Druzy/Macro-crystalline)
Silicon Dioxide (SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Geode (likely within Limestone or Dolomite matrix)
Quartz (SiO₂)
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz crystals
Sandstone
Arenite
Green Kyanite
Kyanite (Al2SiO5)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Shungite
Non-crystalline carbon (allotrope of carbon)