Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Sedimentary Mineral
Browse sedimentary mineral specimens identified by the Rock Identifier community.
Learn about Sedimentary Mineral in the encyclopedia
View all →
Unidentified pale yellow-green mineral/rock fragment
Possibly sulfur-bearing mineral, serpentine, or weathered limestone; exact identification requires testing
mineral
Celestite (Celestine) Geode
Strontium Sulfate (SrSO4)
mineral
Assorted Tumbled Gemstones
Mixed oxides and silicates (including Quartz, Chalcedony, and Feldspar variants)
mineral
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Small weathered mineral/rock fragment
Indeterminate; possibly quartz-bearing feldspathic rock or calcite-rich specimen
mineral
Blue Caribbean Calite
Calcium Carbonate (CaCO3) with trace Aragonite
mineral
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Basalt with Caliche Crust
Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating
igneous
Hematite
Hematite (Fe2O3)
Mineral
Jasper / Chert (Red)
Cryptocrystalline quartz (SiO2)
Sedimentary / Mineral
Red Jasper (Tumbled)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary/mineral
Jasper / Chert (polished)
Microcrystalline Quartz (SiO2)
sedimentary / mineral
Agate Nodule / Weathered Chert
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
Sedimentary / Mineral
Jasper
Silicon dioxide (SiO2)
Sedimentary / Mineral
Jasper
Cryptocrystalline quartz (SiO2)
Sedimentary/Mineral
Jasper
Microcrystalline Quartz (SiO2)
Sedimentary/Mineral
Picture Jasper
SiO2
Sedimentary/Mineral
Red Jasper
Jasper (Silicon Dioxide) - SiO2
sedimentary/mineral
Ferruginous Quartz (Carnelian/Sardine Jasper)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) impurities
sedimentary/mineral
Red Jasper (River Pebble)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary/mineral
Jasper
Chalcedony (SiO2)
Sedimentary/Mineral
Jasper (brecciated or orbicular variety)
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary/mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary/mineral
Jasper
Silica (SiO2) with impurities
Sedimentary/Mineral
Crazy Lace Agate
Silicon Dioxide (SiO2) with iron and aluminum inclusions
sedimentary mineral
Red Jasper (River Polished)
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary/mineral
Red Jasper
Silicon dioxide (SiO2) with iron oxide (Fe2O3) inclusions
sedimentary/mineral
Red Jasper (Brecchiated Jasper)
Silicon Dioxide (SiO2) with Hematite impurities
Sedimentary / Mineral
Banded Agate (Mutton-fat or Pork-stone variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
Sedimentary / Mineral
Jasper (specifically Bloodstone or Heliotrope variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
Sedimentary / Mineral
Red Jasper (River Polished)
Jasper (Silicon Dioxide, SiO2)
sedimentary/mineral
Red Jasper
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
sedimentary/mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary/mineral
Tree Agate
Chalcedony with Dendritic Chlorite (SiO2 with impurities)
sedimentary/mineral
Jasper (Iron-stained Chalcedony)
SiO2 with Fe2O3 (Iron Oxide) impurities
Sedimentary / Mineral (Silica)
Obsidian and Green Calcite
Volcanic Glass and Calcium Carbonate (CaCO3)
igneous and sedimentary/mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image
fossil
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil