Bituminous Coal
Humic coal (Carboniferous fossil fuel)
sedimentary
Category
Industrial Byproduct
Browse industrial byproduct specimens identified by the Rock Identifier community.
Learn about Industrial Byproduct in the encyclopedia
View all →
Diabase
Diabase (also known as Dolerite)
igneous
Greywacke
Dirty Sandstone (Lithic wacke)
sedimentary
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Pumice
Pumice (Amorphous volcanic glass)
igneous
Pumice
Pumice (a highly vesicular volcanic glass)
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Basalt
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Basalt with Desert Varnish
Mafic Volcanic Rock (Fe/Mg rich Silicate)
igneous
Basalt (River Pebble)
Basalt (Mafic Extrusive Igneous Rock)
igneous
Granodiorite
Granodiorite (Na,Ca)(Al,Si)4O8
igneous
Vesicular Basalt
Basalt (with vesicular texture)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Pumice and Scoria
Vesicular Volcanic Ejecta (Rhyolite/Andesite/Basalt)
igneous
Basalt
Basalt
igneous
Basalt (Vesicular/Scoria)
Vesicular Basalt
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Bauxite
Bauxite (mixture of Gibbiste Al(OH)3, Boehmite ̳-AlO(OH), and Diaspore ́-AlO(OH))
sedimentary
Pink Granite
Granite (Felsic plutonic rock)
igneous
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Basalt
Basalt
igneous
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Basalt (Vesicular)
Basalt
igneous
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Carborundum (Silicon Carbide)
Silicon Carbide (SiC) / Moissanite (natural form)
mineral
Blue Cat's Eye Quartz (Heated/Dyed)
Silicon Dioxide (SiO2) with fibrous inclusions
mineral
Mica Sand / Vermiculite
Phyllosilicate group (typically Biotite or Muscovite)
mineral
Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) with polymer resins
Sedimentary-like (Industrial Composite)
Weathered dark mineral/rock fragment
Indeterminate; possibly iron-rich basalt, slag, or a sulfide-bearing mineral
mineral
United States Quarter Dollar
Cupronickel Clad Alloy (75% Copper, 25% Nickel over a 100% Copper core)
Metal / Man-made mineral-like object
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Synthetic material/Textile
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Synthetic material (Not a rock or mineral)
Titanium-coated Metal Cube (Man-made Fidget Toy)
Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)
Mineral alternative / Synthetic
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Anticrystalline / Synthetic Alloy
Glazed Ceramic Tile
Fused Silicate-Clay composite
Synthetic (Man-made material mimicking natural stone)
Polished hematite bead (probable)
Hematite, Fe₂O₃
mineral
Crushed Stone (Basalt/Gabbro)
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
metamorphic