Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Category
Mineral Description (Anthropogenic Material)
Browse mineral description (anthropogenic material) specimens identified by the Rock Identifier community.
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Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Iron Oxide cement)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone Pebble
Sedimentary quartz arenite
sedimentary
Sandstone (with concrete/human-made layer)
Clastic Sedimentary Rock (primarily Quartz/Feldspar grains)
sedimentary
Septarian Nodule (Dragon Stone)
Septarian Concretion (CaCO3 with Calcite, Aragonite, and Limestone/Bentonite)
sedimentary
Titanium Quartz (Aura Quartz)
Silicon Dioxide (SiO2) treated with Titanium
mineral
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Fossilized Shark Tooth
Carcharhinus sp. (likely Bull or Requiem shark family)
sedimentary
Rose Quartz
SiO2 (Silicon Dioxide)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Fluorite
Calcium fluoride, CaF2
Mineral
Slate
Slate (Foliated metamorphic rock)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Quartz Pebble (with probable inclusions or staining)
Quartz (Silicon Dioxide - SiO2)
mineral
Asphalt Concrete
Bituminous Concrete
sedimentary (artificial)
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Flint (or Chert)
Microcrystalline quartz (SiO2)
sedimentary
Granodiorite / Granite (Weathered)
Granodiorite
Igneous
Tumbled pink chalcedony (likely pink agate/jasper)
Microcrystalline quartz, SiO₂, with iron-oxide coloring
mineral
Chert (Flint) with Glauconite
Microcrystalline Quartz (SiO2)
sedimentary
Shale
Sedimentary rock composed of clay minerals and quartz
sedimentary
River cobble (Greywacke/Sandstone)
Sandstone / Greywacke
sedimentary
Green Jasper
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Greenschist
Greenschist (Chlorite Schist)
metamorphic
Banded Siltstone
Banded Siltstone / Laminated Siltstone
sedimentary
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Sandstone Pebble
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Jasper and Quartz Breccia
Silicified Breccia (SiO2)
sedimentary
Sandstone (Red/Brown Sandstone pebble)
Arenite (SiO2 dominated sandstone)
sedimentary
Sandstone
Arenite
sedimentary