Sandstone
Arenite (primarily SiO2)
sedimentary
Category
Organic Material (Likely A Fruit Or Berry)
Browse organic material (likely a fruit or berry) specimens identified by the Rock Identifier community.
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Chert Pebble
Microcrystalline silica (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Vein in Metamorphic Rock
Silicon Dioxide (SiO2) within Metasedimentary host
metamorphic
Red Sandstone (Arkose)
Clastic Sedimentary Rock (Lithic Arkose)
sedimentary
Labradorite
Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8
mineral
Granodiorite
Phaneritic Granodiorite
igneous
Quartz (Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite (Yellow/Tan river stone variety)
Quartzite (primarily SiO2)
metamorphic
Jasper
Silicon dioxide (SiO2)
Mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Banded Iron Formation (BIF)
Banded Iron Formation (Magnetite-Hematite-Chert)
sedimentary
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and magnesium inclusions
Mineral (Variety of Quartz/Chalcedony)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)
sedimentary
Porphyritic Basalt (Chinese Writing Stone or Flower Stone)
Porphyritic Basalt / Porphyry
igneous
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
sedimentary
Sandstone (Ferruginous)
Arenite (SiO2 with iron oxide impurities)
sedimentary
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Quartzite pebble
Quartzite (SiO2)
metamorphic
Quartzite Breccia
Brecciated Quartzite (SiO2)
metamorphic
Jasper (likely Polychrome or Ocean Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Shale
Fissile Mudstone (primarily composed of clay minerals and quartz)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Yellow Ochre / Limonite
Limonite (Hydrated Iron(III) Oxide-Hydroxide, FeO(OH)·nH2O)
mineral
Beryl (likely var. Aquamarine or Goshenite) in Matrix
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Milky Quartz with Mica inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Shale
Fissile Mudstone
sedimentary
Malachite in Matrix
Copper Carbonate Hydroxide (Cu2CO3(OH)2)
mineral
Travertine
Terrestrial Sedimentary Form of Calcium Carbonate (CaCO3)
sedimentary
Milky and Ferruginous Quartz
Silicon Dioxide (SiO2)
mineral
Reddish Brown Claystone or Siltstone
Argillite / Siltstone / Claystone
sedimentary
Chert (containing Flint nodules)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Limonite
FeO(OH)·nH2O (Hydrated iron oxide)
mineral
Sandstone (specifically Lithic or Quartz Arenite)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Chlorastrolite (Greenstone)
Chlorastrolite (variety of Pumpellyite) - Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2 · H2O
mineral