Sandstone (Quartzose)
Arenite (SiO2 based)
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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Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Gold-bearing Quartz Ore
Auriferous Quartz (SiO2 + Au)
metamorphic
Rough Diamond
Diamond (Native Carbon, C)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Arenite (predominantly SiO2)
sedimentary
Sandstone (Banded)
Sedimentary Clastic Rock
sedimentary
Sandstone and Gravel Aggregate
Clastic Sedimentary Rock / Quartzose Sandstone
sedimentary
Sandstone
Sedimentary Clastic Rock
sedimentary
Sandstone Cobble
Arenite (primarily Quartz Arenite)
sedimentary
Sandstone
Arenite (SiO2 with various cementing minerals)
sedimentary
Diamond (Princess Cut)
Carbon (C)
mineral
Red Aventurine
SiO2 (Silicon Dioxide with Hematite/Goethite inclusions)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Ruby
Corundum (Al2O3)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone (Ferruginous)
Arenite with Iron-oxide inclusions (SiO2 primarily)
sedimentary
Fossil-bearing Sedimentary Rock
Sedimentum cum fossili
fossil
Red Sandstone
Arenite (primarily SiO2 with Fe2O3)
sedimentary
River Pebble
Polished Rock Fragment
sedimentary
Sandstone
Sedimentary Rock (Quartzose Sandstone)
sedimentary
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Sandstone
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Shark Tooth Fossil
Chondrichthyes (class) fossilized tooth
fossil
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Mixed Mineral Collection
Multi-mineral Assemblage (Quartz, Jasper, Obsidian, Pyrite, etc.)
mineral
Granodiorite Pebble
Granodiorite
igneous
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock
sedimentary
Sandstone (Greywacke)
Arenite / Wacke (Mainly SiO2 with various lithic fragments)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with iron oxide Fe2O3 staining)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Polished red gemstone pendant, likely red jasper or brecciated jasper
Jasper: microcrystalline quartz (SiO₂), commonly with hematite or iron-oxide inclusions
metamorphic
Sandstone (with Iron Staining)
Arenite (Silicon Dioxide, SiO2, often with iron oxides like Limonite)
sedimentary
Quartz Breccia with Iron Staining
Tectonic or Sedimentary Breccia (SiO2 with Fe2O3)
sedimentary
Quartz (Drusy/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
White Quartz (Milky Quartz Mushroom)
Silicon Dioxide (SiO2)
mineral
Marble
Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.
Metamorphic Rock