Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
sedimentary
Category
Mineral Side Rock
Browse mineral side rock specimens identified by the Rock Identifier community.
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Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
sedimentary
Lapis Lazuli
Lapis Lazuli (Primary mineral: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Azurite in Matrix
Azurite (Cu3(CO3)2(OH)2) in Rhyolite or Sandstone matrix
mineral
Gray Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Granite
Phaneritic intrusive igneous rock (approx. 70 percent SiO2)
igneous
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Moonstone
Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8) inclusions
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode (Cracked)
Crystalline Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary
Shale
Fissile Mudrock (Clay-rich Sedimentary Rock)
sedimentary
Tree Agate (also known as Dendritic Agate)
Silicon Dioxide with inclusions (SiO2 + Mn/Fe)
mineral
Basalt with Quartz Veins
Basalt (SiO2 range 45-52%)
igneous
Dalmation Stone (frequently called Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock
igneous
Geode (Unopened)
Silica-rich Concretion (primarily SiO2)
sedimentary
Quartz (River Cobble)
Silicon Dioxide (SiO2)
mineral
Dendritic Siltstone
Siltstone with Manganese Dendrites (MnO2)
sedimentary
Quartz Vein in Schist
Quartz (SiO2) in Pelitic Schist
metamorphic
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
River Rock (Greywacke/Sandstone)
Lithic Wacke
sedimentary
Amphibolite with Hornblende
Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Breciated Limestone with Calcite Veins
Sedimentary Breccia (CaCO3)
sedimentary
Quartz Druse (on Chalcedony/Agate base)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3) with Chromium traces
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Sandstone
Arenite (SiO2 + various cementing minerals)
sedimentary
Banded Agate Geode
Silicon Dioxide (SiO2)
mineral
Chalcedony in Limestone Host Rock
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
Mineral within Sedimentary Rock
Sandstone
Arenite
sedimentary
Dragon Blood Jasper
SiO2
mineral
Tiger's Eye (Mineral Collection)
Tiger's Eye (SiO2 with crocidolite inclusions)
mineral
Moss Agate with Jasper
Chalcedony (SiO2 with inclusions)
mineral
Note regarding baguette production (not a rock)
Digital text image - Somali language
not a rock
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Sedimentary Outcrop (Sandstone/Shale)
Sedimentary bedrock formation (variable composition)
sedimentary