Amber
Amber (C10H16O)
mineral
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Chert (varietal Flint)
Silicon Dioxide (SiO2)
sedimentary
Zebra Jasper
Silicon Dioxide (SiO2) with various inclusions
metamorphic/sedimentary
Yellow Aventurine (or Citrine-colored Quartz)
Silicon Dioxide (SiO2) with inclusions
metamorphic
Ironstone with Limonite/Goethite coating
Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O)
sedimentary
Druzy Quartz on Chert/Siltstone
Silicon Dioxide (SiO2) on Microcrystalline Silica/Siltstone matrix
sedimentary
Green Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Carnelian
Carnelian (SiO2 with Iron Oxide impurities)
mineral
Sandstone (likely Quartzose Sandstone)
Arenite
sedimentary
Travertine
Terrestrial Sedimentary Rock (CaCO3)
sedimentary
Quartzite
Metamorphic Quartz (SiO2)
metamorphic
Porphyritic Basalt
Porphyritic Mafic Extrusive Rock
igneous
Concrete / Anthropogenic Conglomerate
Man-made composite material (Portland cement, aggregate, and water)
not a natural rock
Quartzite
Quartzite (SiO2)
metamorphic
Granite
Granite (a common igneous rock)
igneous
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Quartz (Silicon Dioxide) with Hematite inclusions, SiO2
mineral
Shale
Shale (comprised mostly of clay minerals and quartz)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Chert (Flint variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint or Jasper based on color)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz Druzy Geode Fragment
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (with Iron Oxide / Hematite staining)
sedimentary
Red Sandstone
Arenite (with Iron Oxide pigmentation)
Sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Biotite Mica
K(Mg, Fe)3AlSi3O10(F, OH)2
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Magnetite (likely with weathered Limonite/Hematite)
Magnetite (Fe3O4) with iron oxide weathering
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
mineral
Pyrite (on Quartz matrix)
Iron Sulfide (FeS2)
mineral
Quartz (Grain/Fragment)
Silicon Dioxide (SiO2)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral