Red Jasper Pebble
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Category
Sedimentary (Chemically Precipitated) Or Metamorphic
Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.
Learn about Sedimentary (Chemically Precipitated) Or Metamorphic in the encyclopedia
View all →
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz on Limestone
Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)
Mineral on Sedimentary
Chert (Flint / Agate Nodule)
Silicon Dioxide (SiO2)
sedimentary
Weathered quartz-rich rock, likely milky quartz or quartzite
Quartz (SiO₂); possibly quartzite, a metamorphosed quartz sandstone
metamorphic
Quartz crystal fragment (likely milky quartz)
Quartz, silicon dioxide (SiO₂), trigonal crystal system
mineral
Veined Limestone (Micrite) with Quartz/Calcite Veins
Calcium Carbonate (CaCO3) with Silicate or Carbonate inclusions
sedimentary
Quartzite (River Cobble)
Quartzite (primarily SiO2)
metamorphic
Tumbled yellow chalcedony (likely yellow jasper)
Microcrystalline quartz, SiO₂; chalcedony/jasper variety
mineral
Quartz (Pebble)
Silicon Dioxide (SiO2)
mineral
Chert or flint nodule
Microcrystalline quartz (SiO₂), likely chalcedony-rich chert
sedimentary
Chert with Manganese Dendrites / River Silt Overlays
Cryptocrystalline Quartz (SiO2) with Manganese Oxides
sedimentary
Liesegang Banded Sandstone (Concretion / Weathered Pebble)
Sandstone showing Liesegang rings / Weathering rind (SiO2 with iron oxides)
sedimentary
Sandstone (with Liesegang rings or Oxidation)
Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)
sedimentary
Veined Pebble (Quartz/Calcite Veined Metamorphic/Sedimentary Rock)
Quartz / Calcite Veined Fault Breccia or Metamorphic Pebble
metamorphic
Quartz (Grain/Fragment)
Silicon Dioxide (SiO2)
mineral
Banded iron formation (ironstone)
Banded iron formation, chiefly hematite/magnetite with chert (SiO₂)
sedimentary
Banded Iron Formation (BIF)
Banded Iron Formation with Hematite and Jasper
sedimentary
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Banded iron formation (ironstone), likely hematite–magnetite jasper
Banded iron formation (BIF), chiefly Fe₂O₃ hematite, Fe₃O₄ magnetite, and SiO₂ quartz/chert
sedimentary
Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
metamorphic
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Flint (Chert)
Cryptocrystalline Silica (SiO2)
sedimentary
Ferruginous Sandstone (Ironstone)
Sedimentary rock with Limonite/Goethite cement
sedimentary
Peach/orange calcite cluster
Calcite (CaCO₃), likely botryoidal or scalenohedral aggregate
mineral
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Fossiliferous Limestone
Calcite (CaCO3) matrix with biogenic fragments
sedimentary
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Moqui Marble
Ironstone Concretion (Goethite/Hematite)
sedimentary
Sandstone with Manganese Dendrites
Arenite (mostly SiO2) with Manganese Oxide inclusions (MnO2)
sedimentary
Milky or Iron-Stained Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Likely calcite specimen
Calcite, calcium carbonate (CaCO₃)
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
White Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Milky quartz (quartz crystal)
Quartz, silicon dioxide (SiO₂)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Hematite
Iron Oxide (Fe2O3)
mineral
Hematite
Iron Oxide (Fe2O3)
mineral