Granite
Granite (a common rock type, not a single mineral species)
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Granite
Granite (a common rock type, not a single mineral species)
Sandstone
Sandstone (composed primarily of sand-sized minerals or rock grains)
Hand-Drawn Trading Card (Amateur Artwork)
Cellulose-based substrate with wax/graphite/ink deposit (n/a for minerals)
Sandstone
Arenite (SiO2 based)
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (Sandstone)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone (River Pebble)
Arenite (primarily SiO2)
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
Chert
Microcrystalline silica (SiO2)
Quartz (Milky Quartz)
Quartz (SiO2 - Silicon Dioxide)
Selenite
Gypsum (CaSO4·2H2O), specifically the crystalline variety Selenite
Chert (Flint)
Chert (predominantly SiO₂ - silicon dioxide)
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)
Limestone (Weathered Aggregate)
Sedimentary Carbonate Rock (CaCO3)
Sandstone
Arenite (Siliclastic sedimentary rock)
Sandstone
Arenite (primarily SiO2)
Sandstone (Pebble)
Arenite (composed primarily of SiO2)
Sandstone Pebbles
Arenite (Sedimentary rock composed of sand-sized grains)
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Quartzite-rich River Cobble)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (composed primarily of SiO2)
Diamond (in Gold Jewelry)
Carbon (C)
Ferruginous Sandstone (with Iron Oxide staining)
Clastic Sedimentary Rock - Quartz Arenite/Wacke
Native Silver
Silver (Ag)
Calcite
Calcite (CaCO3)
Sandstone
Clastic Sedimentary Rock (composed mostly of quartz and/or feldspar)
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz, SiO2)
Shale
Shale (Sedimentary rock composed of mud/clay minerals)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Peridot and Citrine Gemstones (in a ring setting)
Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)
Limestone with Calcite Veining
Calcium Carbonate (CaCO3)
Sandstone (Pebble)
Clastic sedimentary rock (SiO2 primary)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (likely Arkose)
Arenite (composed mainly of SiO2 with Feldspar)
Crushed Limestone Aggregate
Limestone (Calcium Carbonate, CaCO3)