Sandstone (Quartzose)
Arenite (primarily SiO2)
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (iron-rich)
Sandstone
Arenite (SiO2 based)
Fossilized Dinosaur Skull (Tyrannosaurus rex)
Tyrannosaurus rex (permineralized fossil), rich in Hydroxylapatite/Silica
Chrysocolla (with Quartz and Azurite)
Hydrated copper phyllosilicate mineral [Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)]
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Sandstone (likely Ferruginous)
Sandstone (SiO2 with iron oxides)
Basalt (River Stone)
Basalt
Petrified Wood
Silicified Wood (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz (Granular Milky Quartz fragment)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Diamond (in jewelry)
Carbon (C)
Sandstone (with biological crust)
Arenite (SiO2 based)
Caribbean Calcite
Calcite (CaCO3) with Aragonite (CaCO3)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Jasper with Chert
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Sandstone (Water-worn Cobble)
Arenite (variable composition, primarily SiO2)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Sandstone Cobble
Clastic Sedimentary (Sandstone)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Dyed Agate
Silicon Dioxide (SiO2)
Quartz / Common Opal
Silicon Dioxide (SiO2)
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
Dinosaur Fossil (Tyrannosaurus rex skull replica/specimen)
Tyrannosaurus rex (fossilized in permineralized sedimentary matrix)
Limestone (Porous/Travertine variant)
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar)
Banded Agate (with Quartz Geode Center)
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 cement)
Ironstone Nodule (Ironstone Concretion)
Siderite-rich Mudstone (FeCO3) or Limonite (FeO(OH)·nH2O)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Sandstone
Arenite (SiO2-rich)
Sandstone (Ferruginous)
Arenite (with iron oxide cement, Fe2O3)
Sandstone
Arenite (primarily SiO2)
Sandstone (Greywacke)
Arenite / Clastic Sedimentary Rock
Sandstone (Quartzose type)
Arenite (primarily SiO2)
Quartzite Pebble
Quartzite (primarily SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)