Pyrite (locally known as Fool's Gold)
Iron Sulfide (FeS2)
mineral
Category
Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein) in the encyclopedia
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Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Chert with Calcite Veins
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) intrusions
sedimentary
Fossilized Bark
Lepidodendron / Sigillaria fossil impression
fossil
Quartz (Milky/Yellowish)
Silicon Dioxide (SiO2)
mineral
Milky Quartz (among River Rock)
Quartz (Silicon Dioxide, SiO2)
Mineral
Chert (specifically Flint or Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Specularite in Quartz
Specular Hematite (Fe2O3) in Quartz (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Auriferous Quartz or Pyritic Ore
Iron Pyrite (FeS2) or Native Gold (Au) in Matrix
mineral
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Carnelian)
Silicon Dioxide (SiO2)
mineral
River Cobble (Sandstone / Greywacke)
Sedimentary Rock (predominantly Quartz, Feldspar, Lithic fragments)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2) in Geode formation
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Quartz (Silicon Dioxide) - SiO2 with Iron impurities
mineral
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2)
sedimentary
Quartz with Iron Oxide Inclusions
Silicon Dioxide (SiO2) with Hematite/Limonite
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Pegmatite
Coarse-grained Igneous Rock (Granitic Pegmatite)
igneous
Tumbled rose quartz
Rose quartz (pink quartz), silicon dioxide, SiO₂
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Jasper
Silicon dioxide (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
River Pebble (Sandstone / Quartzite)
Sedimentary rock (Quartz arenite / Quartzite pebble)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Common Opal variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Rose Quartz
Quartz (Silicon Dioxide - SiO2) with trace amounts of titanium, iron, or manganese
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)