Quartz Pebble
Silicon Dioxide (SiO2)
Category
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
Quartz Pebble
Silicon Dioxide (SiO2)
Basalt
Basalt
Greenstone (Prase / Nephrite / Serpentine mix)
Metamorphosed ultramafic rock / greenstone facies
Yellow chalcedony (likely heat-treated or resin-coated)
Microcrystalline quartz, SiO₂
Granite
Intrusive Felsic Igneous Rock
Sandstone
Arenite (Sedimentary rock)
Red Sandstone Pebble
Arenite with iron oxide (Hematite)
Vesicular Basalt
Basalt (extrusive volcanic rock)
Sandstone
Arenite (primarily SiO2)
Granite
Felsic Intrusive Igneous Rock
Sandstone (likely Quartzose)
Sandstone (Principally SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (High Silica / Iron Oxide)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily composed of SiO2 - Silicon Dioxide)
Sandstone
Arenite
Sandstone (Quartzose)
Arenite (primarily SiO2)
Amphibolite
Amphibolite
Chert
Silicon dioxide (SiO2)
Pink Quartz
Silicon Dioxide (SiO2)
Tumbled quartz-rich rock, likely quartzite or milky quartz with iron-oxide staining
Quartzite (primarily SiO₂), possibly with hematite/goethite staining and minor feldspar or mica
Basalt (Greenstone)
Amygdaloidal Basalt / Chloritized Basalt
Pink Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Tektite
Impactite (Natural Silicate Glass)
Rose Quartz
Silicon Dioxide (SiO2)
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Arenite
Sandstone
Arenite (primarily SiO2 with various cementing agents)
Sandstone
Arenite (Quartz Sandstone)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite
Sandstone (likely Graywacke or Lithic Sandstone)
Clastic Sedimentary Rock
Sandstone
Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)
Sandstone
Arenite (SiO2 primarily)
Red Sandstone
Arenite (Ferruginous Sandstone)
Granite
Granite (Felsic Plutonic Rock)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Vesicular Basalt
Basalt
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Bioclasts