Breccia
Breccia - Clastic sedimentary rock
Category
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
Breccia
Breccia - Clastic sedimentary rock
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
Polished red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
Quartz Geode with Calcite/Siderite
Crystalline Silicon Dioxide (SiO2) with Carbonate inclusions
Druzy Quartz on Host Rock
Silicon Dioxide (SiO2) with various iron-oxide inclusions
Sandstone (with Arkose characteristics)
Clastic sedimentary rock (SiO2 with KAlSi3O8)
Tumbled red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone
Arenite
Jasper (specifically Yellow or Bumblebee-like Jasper)
Silicon Dioxide (SiO2) with impurities
Concretion in Shale
Siltstone/Shale with Siderite or Calcareous concretions
Sandstone
Arenite (SiO2 principal)
Basalt with Amygdule
Aphanitic Mafic Volcanic Rock (Basalt) with Zeolite/Quartz Infill
Sandstone
Arenite
Sandstone
Arenite (SiO2 primarily)
Sandstone
Arenite
Sandstone
Arenite
Quartz / Calcite Pebble
SiO2 (Quartz) or CaCO3 (Calcite)
Sandstone
Arenite (primarily SiO2)
Druzy Quartz
Silicon Dioxide (SiO2)
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
Sandstone Concretion (Omar or Nut Rock)
Sedimentary Concretion (specifically an 'Omarolluk' or Omar)
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
Yellow Chert (Yellow Jasper)
Silicon dioxide (SiO2)
Yellow Jasper
Microcrystalline Quartz (SiO2)
Garnet-Bearing Gneiss
Garnetiferous Feldspathic Gneiss
Sandstone
Arenite (SiO2 principal component)
Orange Calcite
Calcium Carbonate (CaCO3)
Green Aventurine
Silicon dioxide (SiO2) with fuchsite inclusions
Sandstone
Arenite (composed primarily of SiO2)
Red Jasper with Quartz Veining
Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions
Sandstone
Arenite/Quartz Arenite
Sandstone
Arenite (SiO2 primarily)
Red jasper (likely polished/tumbled)
Jasper, an opaque microcrystalline variety of quartz/chalcedony (SiO₂), colored red by iron oxides
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Fragmented Sedimentary Pebble
Clastic Sedimentary Specimen
Sandstone (likely Arkosic or Quartzose)
Sandstone (SiO2 with inclusions)
Sandstone
Arenite (SiO2 based typically)
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
Quartz-rich rock, possibly milky quartz vein material
Quartz (SiO₂), likely with iron-oxide staining and minor host-rock inclusions
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Amber
Fossilized Tree Resin