Asphalt (Bituminous Concrete)
Composite material (bitumen binder with mineral aggregate)
man-made rock (technosol)
Category
Industrial By Product
Browse industrial by product specimens identified by the Rock Identifier community.
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
not a rock (synthetic material/costume)
Porcelain Tile (Sandstone-look)
Man-made Ceramic (resembling Quartz-rich Sandstone)
sedimentary (imitation)
Standing Liberty Quarter (Silver Specimen)
Native Silver alloy (Ag with Cu traces)
mineral
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Diamond in Kimberlite
Kimberlite Matrix with Carbon (Diamond)
igneous
Slag
Glassy silicate byproduct (anthropogenic material)
industrial byproduct
Carborundum (Silicon Carbide)
Silicon Carbide (SiC) / Moissanite (natural form)
mineral
Red Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Antropogenic (Man-made material)
Slag (Industrial Glass Slag)
Amorphous Silica / Ferro-silicate Slag
mineraloid / anthropogenic
Ferro-silicate Slag
Industrial Vitrified Slag (High-silica amorphous glass)
Mineral byproduct (Anthropogenic)
Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
mineral
Bituminous Coal
Bituminous coal (Carbonaceous sedimentary rock)
sedimentary
Bog Iron (Limonite)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
sedimentary
Basalt
Extrusive mafic igneous rock
igneous
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Scoria
Scoria (vesicular volcanic rock)
igneous
Basalt Water-Worn Pebble
Aphanitic Mafic Igneous Rock
igneous
Terracotta (Man-made ceramic brick fragment)
Baked clay / High-iron ceramic (Silicate-based ceramic)
Anthropogenic material (Man-made sedimentary mimic)
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
igneous (artificial/anthropogenic)
Cubic Zirconia
Cubic Zirconium Dioxide (ZrO2)
mineral
Kyanite
Kyanite (Al2SiO5)
Mineral
Chert (containing Flint nodules)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Garnet (Almandine)
Almandine Fe3Al2(SiO4)3
mineral
Garnet in Matrix (Schist or Quartz)
Almandine Garnet, Fe3Al2(SiO4)3
metamorphic
Copper Ore (likely Malachite or Chrysocolla staining)
Copper Secondary Mineral (e.g., Cu2CO3(OH)2)
mineral
Garnet Schist
Almandine-mica schist
metamorphic
Quartzite
Quartzite
metamorphic
Botryoidal Quartz
Silicon Dioxide (SiO2)
mineral
Granitic Gravel
Granite (Quartz, Feldspar, and Mica mixture)
igneous
Marble
Recrystallized Calcite / Metamorphosed Limestone (CaCO3)
metamorphic
Amber Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Jasper
Jasper (Silica/Silicon Dioxide, SiO2)
sedimentary
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
igneous or metamorphic (base stone); anthropogenic (decoration)
Sandstone (with biological crust)
Arenite (SiO2 based)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)
sedimentary
Diamond (or Cubic Zirconia)
C (Carbon) or ZrO2 (Zirconium Dioxide)
mineral
Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Vesicular Rhyolite
Extrusive igneous rock (high-silica rhyolite)
igneous