Quartz (Rock Crystal) with minor impurities
Quartz (SiO2)
Mineral
Category
Industrial Byproduct (Anthropogenic Rock Like Material)
Browse industrial byproduct (anthropogenic rock like material) specimens identified by the Rock Identifier community.
Sandstone (specifically Cross-bedded Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Garnet (Almandine)
Almandine, Fe3Al2(SiO4)3
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Mica Schist with Garnet
Garnetiferous Mica Schist
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Diamond
Native Carbon (C)
mineral
Red Sandstone
Arenite (primarily Quartz with Iron Oxide)
sedimentary
Chert (Green variety)
Silicon Dioxide (SiO2)
sedimentary
Milk Quartz (with Iron staining)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Graphite Schist
C (Carbonaceous Schist)
metamorphic
Quartzite pebble
Quartzite (SiO2)
metamorphic
Chert (Jasper/Mudstone variant)
Silicon Dioxide (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
sedimentary
Smoky Quartz and Biotite Schist
Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)
metamorphic
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Quartz with Limonite Staining
Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)
Mineral
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Yellow Jasper
Silicon Dioxide with iron inclusions (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (and Limestone) River Cobble
Microcrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Banded Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Chert (also known as Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 based)
sedimentary
Dyed Agate Slice
Silicon Dioxide (SiO2) with artificial colorants
Mineral (variety of Chalcedony)
Granite
Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)
igneous
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Synthetic/Anthropogenic Mineraloid
Travertine (Calcareous Tufa)
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Ferruginous)
Arenite (SiO2 with Iron Oxide impurities)
sedimentary
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
sedimentary
Milky Quartz (among River Rock)
Quartz (Silicon Dioxide, SiO2)
Mineral
Septarian Nodule (Galt)
Calcareous concretion / Septarian concretion
sedimentary
Sandstone (Greywacke/Siltstone variant)
Arenite / Wacke (SiO2 with diverse mineral inclusions)
sedimentary
Chert (Flint)
Chert (SiO2)
sedimentary
Geode or Concretion
Silica-rich Concretion or Unopened Geode (SiO2)
sedimentary