Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Category
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Pyrite (on Quartz matrix)
Iron Sulfide (FeS2)
Amber
Succinate (Fossilized Tree Resin)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Jasper
Jasper (Silicate mineral, SiO2)
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Chert (Jasper)
Silicon Dioxide (SiO2)
Siderite Concretion (Nodule)
Iron Carbonate (FeCO3) Concretion
Banded Chert
Microcrystalline Quartz (SiO2)
Jasper and Chert Conglomerate
Ferruginous Microcrystalline Quartz (SiO2)
Red Sandstone
Arenite (Ferruginous Sandstone)
Fossiliferous Limestone (with Crinoids/Coral)
Fossiliferous Limestone (CaCO3)
Crazy Lace Agate
Silicon Dioxide (SiO2) with iron and aluminum inclusions
Banded Sandstone (Liesegang Rings)
Sedimentary sandstone with Iron oxide precipitates
Ironstone Concretion (Limonite/Goethite)
Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)
Petrified Wood
Silicified wood (Quartz, Chalcedony, or Opal)
Fluorite and Red Jasper
Fluorite (Calcium Fluoride, CaF2) and Red Jasper (Silicon Dioxide, SiO2)
Limestone (Brecciated/Recrystallized)
Calcium Carbonate (CaCO3)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Yellow Quartzite River Cobble
Meta-quartzite (SiO2 with iron oxide staining)
Sandstone
Arenite (primarily SiO2)
Red Quartzite
Quartzite (SiO2)
Sandstone
Arenite (primarily SiO2, silica)
Sandstone (with Liesegang rings or Oxidation)
Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)
Puddingstone (Gowganda Tillite/Lorrain Quartzite)
Jasper Conglomerate
Chert / Flint
Microcrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (Pink Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Celestite (Celestine)
Strontium sulfate (SrSO4)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
Chert (Nodular)
Cryptocrystalline Quartz (SiO2)
Optical Calcite
Calcite (Calcium Carbonate, CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Quartzite with Sandstone/Iron staining
Metamorphic Quartzite (SiO2)
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
Jasper with Iron Inclusions
Silicon Dioxide (SiO2) with impure Iron Oxides
Chert (Yellow Jasper variant)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Sandstone (Quartzite Pebble)
Arenite / Metamorphosed Sandstone (SiO2)
Travertine (Ceramic Tile)
Terrestrial Sedimentary Rock / Calcium Carbonate (CaCO3)