Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Category
Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Mica Schist
Mica Schist (contains muscovite/biotite, quartz, plagioclase)
Breccia Pebble
Sedimentary Breccia
Dalmatian Jasper
Peralkaline rhyolite
Chert (Chert Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
Amethyst Geode Fragment
Amethyst (Silicon Dioxide, SiO2) with Quartz matrix
Calcite Geode
Calcium Carbonate (CaCO3)
Ironstone Concretion / Goethite-Hematite Nodule
Goethite/Hematite (α-FeO(OH) / Fe2O3)
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
Quartz (Druzy Quartz)
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily Quartz Arenite)
Sandstone Pebble
Arenite (majoritarily SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Turquoise
Hydrous phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Ironstone Concretion
Siderite or Ferruginous Concretion (FeCO3 or Iron Oxides)
Concretion
Septarian or Siderite Concretion
Sandstone (with Iron Siderite Concretion)
Arenite with Ironstone Concretion (FeCO3)
Quartz Geode (Druzy Quartz)
Silicon Dioxide (SiO2)
Gneiss Pebble
Gneiss
Shale with Coprolite influence
Argillaceous sedimentary rock (Shale/Mudstone)
Chert (Sedimentary Rock)
Silicon Dioxide (SiO2)
Quartzite Geode or Crystalline Quartz Node
Silicon Dioxide (SiO2)
Gneiss
Gneiss (Foliated Metamorphic Rock)
Limonite Geode (Ironstone Concretion)
FeO(OH)·nH2O (Hydrated Iron Oxide)
Red Jasper
Silicon Dioxide (SiO2 with Hematite impurities)
Chalcedony Nodule / Agate
Silicon Dioxide (SiO2)
Sandstone (Iron-stained)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
Gneiss
Gneiss (Foliated Metamorphic Rock)
Gneiss
Gneissic Metamorphic Rock
Sandstone (Stream-Rolled)
Clastic Sedimentary Rock (primarily SiO2)
Druzzy Quartz on Matrix
Silicon Dioxide (SiO2)
Amethyst Geode
Silicon Dioxide (SiO2) with iron impurities
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Garnet in Schist (Mica Schist with Garnet Inclusion)
Garnetiferous Mica Schist (X3Al2(SiO4)3)
Sandstone (specifically Red Sandstone)
Arenite (primarily Quartz, SiO2)
Gneiss
Gneiss
Concretion
Sedimentary Concretion (e.g., Siderite or Ironstone)
Wonderstone Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Garnet-Bearing Gneiss
Garnetiferous Feldspathic Gneiss
Garnet Amphibolite (or Garnet Gneiss)
Garnet amphibolite / Garnet-bearing metamorphic rock