Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Sedimentary (Artificial)
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
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Yellow Jasper
Silicon dioxide (SiO2)
sedimentary
Geode (Unopened)
Silica-rich concretion (SiO2)
sedimentary
Jasper and Ironstone (likely Jasperized Ironstone)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
sedimentary
Sandstone
Sandstone (SiO2 predominant)
sedimentary
Red Sandstone
Sandstone (principally Quartz, SiO2, with Iron Oxide hematite cement)
sedimentary
Fossiliferous Limestone
Bioclastic Limestone (CaCO3)
sedimentary
Fossiliferous Limestone with Brachiopods
Calcium Carbonate (CaCO3) with fossilized Brachiopoda sp. (likely Order Spiriferida or Rhynchonellida)
sedimentary
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Selenite / Gypsum
Gypsum (CaSO4·2H2O)
Mineral
Shale or Argillite
Shale (sedimentary) / Argillite (metamorphic)
Sedimentary or Metamorphic (low-grade)
Chert Nodules in Sedimentary Rock
Microcrystalline Quartz (SiO2) within Clastic Matrix
sedimentary
Rounded sedimentary pebble, likely mudstone or shale
Argillite/mudstone; predominantly compacted clay minerals with quartz and iron oxides
sedimentary
Common Pebble / Sedimentary Rock Fragment
Lithified clastic sediment
sedimentary
Quartz-veined Sedimentary Rock
Sedimentary rock with hydrothermal quartz veins
sedimentary
Quartz Vein in Basalt or Sedimentary Host Rock
Silica-veined lithic fragment (SiO2 in host matrix)
sedimentary
Vein-filled Sedimentary Rock
Silicified sedimentary rock with quartz/calcite vein
sedimentary
Quartz and Mixed Sedimentary Rocks
Silicon Dioxide (SiO2) mixed with various clastic sedimentary lithologies
sedimentary
Sandstone
Sandstone (SiO2 dominated)
sedimentary
Puddingstone (Gowganda Tillite/Lorrain Quartzite)
Jasper Conglomerate
sedimentary
Sandstone (Heart-shaped pebble)
Sedimentary Quartz Sandstone
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone (Weathered Fragment)
Clastic Sedimentary Rock
sedimentary
Sandstone and River Pebbles
Sedimentary Rock (Sandstone / Quartzite / Chert)
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Limestone (or Sandstone)
Calcium Carbonate (CaCO3) / Silica (SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Bivalve Fossil in Sedimentary Matrix
Fossiliferous Mudstone (Class: Bivalvia)
sedimentary
Dendritic sandstone
Sandstone with Manganese Oxide dendrites
sedimentary
Hag Stone
Siltstone or Fine-grained Sandstone with boring (e.g., Lithophaga impact)
sedimentary
Smooth gray river pebble
Likely fine-grained sandstone or siltstone; exact identification requires a fresh surface and tests
sedimentary
Honey calcite (orange calcite)
Calcite, calcium carbonate (CaCO₃)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
sedimentary
Quartz Geode with Calcite
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
mineral
Red Jasper
Red Jasper (SiO2)
sedimentary
Quartz on Host Rock
Silicon Dioxide (SiO2)
Mineral Specimen
Jasper with Iron Staining
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral