Agate Nodule / Weathered Chert
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Agate Nodule / Weathered Chert
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
Gneiss
Gneiss (High-grade metamorphic rock)
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
Green Jasper
Silicon Dioxide (SiO2) with impurities
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
Stromatolite (Fossiliferous Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
Mookaite Jasper
Silicified Radiolarite (SiO2)
Sandstone (Stream-rounded)
Arenite (SiO2 based)
Jasper (Mookaite style)
Silicon Dioxide (SiO2) with iron and manganese inclusions
White Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
Chert (Smooth River Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (specifically Flint or Jasper variant)
Silicon Dioxide (SiO2)
Quartzite (River Stone)
Quartzite (mainly SiO2 with iron oxide staining)
Sandstone
Arenite (primarily SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Fossil / Permineralized Bone
Tyrannosaurus rex fossil (Hydroxylapatite replaced by various minerals)
Chert (Jasper variety)
Chert (Silicon Dioxide, SiO2)
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)
Chert (specifically Flint or Common Chert)
Microcrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Milky Quartz Geode or Druzy Quartz
Silicon Dioxide (SiO2)
Sparkling Druzy Quartz on Matrix
Silicon Dioxide (SiO2) with iron oxide inclusions
Petrified Wood (Silicified Wood)
Silicified Paleoflora (mainly Quartz, SiO2)
Chert / River Pebble
Silicon Dioxide (SiO2)
Chert (Smooth River Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Chert (SiO2)
Conglomerate
Conglomerate (SiO2 dominant in clasts)
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)
Chert (Iron-stained)
Chert (primarily Microcrystalline Quartz, SiO2)
Quartz on Matrix
Silicon Dioxide (SiO2)
Banded Chert with Quartz Veining
Microcrystalline Quartz (SiO2)
Chert (and Limestone)
Silicon Dioxide (SiO2)
Sandstone Pebble
Arenite (primarily SiO2)