Amber
Succinite (approximate formula C10H16O)
mineraloid
Category
Amorphous Solid
Browse amorphous solid specimens identified by the Rock Identifier community.
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Amber
Succinite (a common variety of fossilized resin)
mineral
Tektite (Indochinite)
Tektite (Silica-rich natural glass)
mineral
Amber
Succinite (specifically for Baltic amber); chemical formula approx. C10H16O
Organic Gemstone (fossilized resin)
Chrysocolla in Matrix
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Silicate/Secondary Copper Mineral)
mineral
Limonite with Quartz (Gossan)
Hydrated iron(III) oxide-hydroxide mixture (FeO(OH)·nH2O) with Silicon Dioxide (SiO2)
Mineral
Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Amber
Succinite (fossilized resin, C10H16O)
mineral
Limonite (Ironstone Concretion)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Amber
Succinite (fossilized organic resin)
mineral
Opal
Hydrated silica (SiO2·nH2O)
mineraloid
Amber
Succinite
mineral
Human Skin (Epidermis/Dermis)
Integumentary tissue (High content of hydroxyapatite in bones, though the surface is biological)
Mineral-like biological tissue
Black Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Conglomerate
Conglomerate (SiO2 dominant in clasts)
sedimentary
Obsidian
Extrusive igneous volcanic glass (rich in SiO2)
igneous
Obsidian
Obsidian (Volcanic glass), SiO2 (major component)
igneous
Mahogany Obsidian
Volcanic Glass (predominantly SiO2 with Hematite/Magnetite inclusions)
igneous
Tiffany Stone
Fluorite Opal (a complex mix of Fluorite, Opal, Calcite, Dolomite, Quartz, and Bertrandite)
mineral
Pumice
Pumice (a highly vesicular volcanic glass)
igneous
Ammonite Fossil (Small Pyritized or Calcitized Internal Mold)
Ammonoidea
sedimentary
Ironstone Concretion (Moqui Marble)
Iron Oxide Concretion (Fe2O3 / FeO(OH) mixed with SiO2)
sedimentary
Limonite (Pseudomorph after Pyrite/Marcasite)
Hydrated Iron Oxide (FeO(OH)·nH2O)
mineral
Mahogany Obsidian
Volcanic Glass with Hematite or Magnetite inclusions (SiO2 + Fe2O3)
igneous
Ferro-slag (Leland Blue/Slag Glass)
Anthropogenic Vitreous Silica (Industrial Slag)
igneous
Pumice
Pumice (Vesicular Rhyolite/Andesite)
igneous
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide)
Igneous
Pumice
Vesicular volcanic glass (primarily SiO2)
igneous
Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Anthracite Coal
Anthracite
metamorphic
Baltic Amber (Butterscotch or Egg Yolk Variety)
Fossilized Tree Resin (Succinite); Approximate formula: C10H16O
Organic Gemstone (Succinite)
Puddingstone
Polymictic Conglomerate
sedimentary
Amber
Succinite (fossilized tree resin), C10H16O
Organic Gemstone
Limonite with Iron Inclusions
Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O)
sedimentary
Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
igneous
Apache Tear (Obsidian)
Hydrated volcanic glass (SiO2 with inclusions)
igneous
Obsidian
Volcanic glass (Mainly SiO2)
igneous
Amber
Succinite (C10H16O)
mineraloid
Amber / Copal
Fossilized Tree Resin (Succinate)
Mineraloid
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Common Opal (Potch)
Opal (Hydrated silica, SiO2·nH2O)
mineral
Bituminous Coal (with Anthracite or Vitrinite inclusion)
Organic-rich Sedimentary Rock (Carboniferous classification)
sedimentary