Hand-Drawn Gengar Pokémon Card Artist Item
Lignocellulosic Fiber (Cellulose, C6H10O5) with wax-based pigment (crayon/colored pencil)
Organic (Paper and Cellulose)
Category
Amorphous Solid
Browse amorphous solid specimens identified by the Rock Identifier community.
Libyan Desert Glass
Libyan Desert Glass (SiO2 with trace elements)
mineral (impactite)
Coal
Bituminous or Anthracite coal (carbon-rich sedimentary rock)
sedimentary
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
mineraloid (man-made)
Limonite (vibrant yellowish-brown iron oxide)
Limonite (FeO(OH)·nH2O)
mineral
Shungite
Non-crystalline carbon (Fullerenes / Carbon-60)
metamorphic
Amber
Succinite
Mineraloid
Obsidian and Phantom Quartz
Volcanic Glass (SiO2 + MgO + Fe3O4) and Crystalline Quartz (SiO2)
igneous and mineral
Bauxite
Bauxite (Al2O3·nH2O)
sedimentary
Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)
Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)
Synthetic (Ceramic)
Amber
Succinicum (C10H16O)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Black Opal
Hydrated silica (SiO2·nH2O)
mineraloid
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
Limonite (Iron Ore)
Limonite (Iron oxide-hydroxide mixture, FeO(OH)·nH2O)
mineral
Yellow Ocher / Limonite
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Mahogany Obsidian Arrowhead
Obsidian (volcanic glass) with Hematite inclusions
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Bumble Bee Jasper
Volcanic Tuff (mixture of SiO2, CaCo3, S, and As2S3)
igneous
Black Obsidian
Volcanic Glass (SiO2)
igneous
Chert (Nodule)
Microcrystalline Silica (SiO2)
sedimentary
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Slag Glass
Glassy Silicate Residue
industrial byproduct
Red Coral
Corallium rubrum
mineral
Dinosaur Fossil (Tyrannosaurus rex skull replica/specimen)
Tyrannosaurus rex (fossilized in permineralized sedimentary matrix)
sedimentary
Limonite/Goethite Gossan
FeO(OH)·nH2O (Hydrated iron oxide)
mineral
Oolitic Limestone
Oolite (Sedimentary Calcium Carbonate)
sedimentary
Anthracite Coal
Anthracite (Carbon-based sedimentary-metamorphic rock)
metamorphic
River Rock (Quartz-dominated)
Silicon Dioxide (SiO2) mixture with varied clastic sediments
sedimentary (alluvial deposit)
Obsidian
Volcanic Glass (70-75% SiO2)
igneous
Fossil Crab
Decapoda (likely Avitelmessus or Raninidae family)
sedimentary
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Opalite
Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)
mineraloid
Obsidian
Volcanic Glass (70% or more SiO2)
igneous
Coquina
Bioclastic Limestone
sedimentary
Amber
Succinite
Organic (Mineraloid)
Limonite (Ironstone)
Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))
mineral
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
metamorphic (man-made / anthropic)
Green Common Opal
Hydrated Silica (SiO2·nH2O)
mineral
Obsidian (Black)
Obsidian (High-silica volcanic glass)
igneous
Obsidian
Volcanic Glass (predominantly SiO2)
igneous