Conglomerate (Puddingstone)
Conglomerate (specifically, clastic sedimentary rock)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Conglomerate (Puddingstone)
Conglomerate (specifically, clastic sedimentary rock)
Banded Iron Formation (BIF) with Quartz
Banded Iron Formation, often composed of alternating layers of hematite (Fe2O3) or magnetite (Fe3O4) and chert (microcrystalline quartz, SiO2)
Shale
Shale (fine-grained clastic sedimentary rock)
Chert / Flint
Chert (varietal name for microcrystalline quartz). Chemical formula: SiO₂
Conglomerate
Conglomerate
Diamond
Carbon (C)
Grooved Maun Ball (Maul/Hammerstone-like Concretion)
Calcareous/Ferruginous Concretion in Sandstone Matrix
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Slate
Foliated Metamorphic Rock (composed mainly of clay minerals or micas)
Green Apophyllite and Stilbite on Quartz Cluster
Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)
Asphalt
Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)
Schist
Schist
Basalt with Mineral Vein (Cobble)
Basalt (with likely Quartz/Calcite vein)
Carnelian
Carnelian (a variety of Chalcedony, SiO ₂)
Sandstone
Sandstone (lithified quartz arenite, arkose, graywacke, etc. depending on composition)
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
Aventurine
Quartz (Aventurine variety)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)
Chert (microcrystalline quartz)
Amazonite
K(AlSi3O8)
Tiger's Eye
Tiger's Eye (Pseudomorph of Quartz after Crocidolite), SiO2
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
Tektite (Indochinite)
Tektite (Amorphous Meteoritic Glass)
Amethyst (Quartz variety)
Silicon Dioxide (SiO2) with iron impurities
Pearl
Aragonite / Calcium Carbonate (CaCO3)
Obsidian
Extrusive igneous volcanic glass (rich in SiO2)
Gold Nugget
Native Gold (Au)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)
Quartzite (Gold/Yellow)
Quartzite (SiO2)
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Basalt
Basalt
Green Aventurine
Aventurine (Silicon Dioxide with Fuchsite inclusions - SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Granite
Granite (a common name for a felsic intrusive igneous rock)
Amazonite
Amazonite (KAlSi3O8 - a variety of Microcline Feldspar)
Amber
Succinite
Amber
Succinite (fossilized tree resin), C10H16O
Granite (likely a river or beach pebble)
Granite (a felsic intrusive igneous rock primarily composed of quartz, feldspar, and mica)
Native Gold (in earring form)
Gold (Au)
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial dye
Herkimer Diamond
Double-terminated Quartz (Silicon Dioxide, SiO2)