Grass (Organic Matter/Soil)
Poaceae (family of monocotyledonous flowering plants)
Organic Materia (Not a rock or mineral)
Category
Organic (Anthropogenic)
Browse organic (anthropogenic) specimens identified by the Rock Identifier community.
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Amber
Succinite (fossilized resin)
mineral
Amber
Succinite (organic fossilized resin)
mineraloid
Amber
Succinite (amorphous organic polymer)
mineral
Pearl
Organic Mineraloid (CaCO3 + Conchiolin)
mineral
Rough Amber (likely Copal or immature Amber)
Organic gemstone / Succinite (if Baltic)
mineral
Amber
Succinates (Organic compound: C10H16O)
mineraloid
Amber
Succinicum (Organic Gemstone - Resinite)
mineraloid
Amber
Amber (Amorphous Organic Hydrocarbon)
mineral
Amber
Succinate (Organic Fossilized Resin)
mineraloid
Amber
Succinite (a fossilized organic resin)
mineral
Coal (most likely Bituminous or Anthracite)
Coal (organic sedimentary rock)
Sedimentary
Amber
Succinates (Organic Fossilized Resin)
mineraloid
Likely bituminous coal
Coal, predominantly carbon-rich organic matter with variable maceral and mineral content
sedimentary
Freshwater Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite organic composite
gemstone
Amber
Fossilized Tree Resin
gemstone
Fossiliferous Limestone
Calcium Carbonate (CaCO3)
sedimentary
Amber
Succinite (C10H16O)
mineral
Fossilized Shark Tooth
Selachimorpha fossil
fossil
Fossiliferous Limestone
Fossiliferous Limestone
sedimentary
Sedimentary Rock (Limestone or Siltstone pebble)
Sedimentary rock fragment
sedimentary
Garden Quartz (Lodolite / Inclusion Quartz)
Quartz with inclusions (SiO2 with various mineral inclusions)
gemstone
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Petrified Wood
Silicified Wood (SiO2 - Quartz/Chalcendony replacing organic matter)
sedimentary
Petrified Wood
Silicified Wood (primarily Quartz / Chalcedony: SiO2)
sedimentary
Seashell (Cone Snail Shell)
Conus sp. (Calcium Carbonate, CaCO3)
fossil
Amber
Succinite (specifically for Baltic Amber), Formula: C10H16O
Organic Gemstone (often associated with Sedimentary sequences)
Pearl (incorporated into jewelry)
Aragonite and Calcite (CaCO3)
mineral
Amber
Succinates
mineraloid
Siderite Concretion in Shale
Iron carbonate (FeCO3) in Mudstone/Shale matrix
sedimentary
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Anthropogenic (Man-made)
Iron Slag
Ferrous Slag (Silicate/Oxide mixture)
industrial byproduct (anthropogenic)
Slag (Industrial Byproduct)
Ferrous/Non-ferrous Silicate
igneous (artificial/anthropogenic)
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
anthropogenic sedimentary (technolith)
Cobalt Blue Sea Glass
Amorphous Silica Glass (SiO2 + CoO)
mineraloid / anthropogenic material
Slag (Industrial By-product)
Glassy silicate or metallic smelting residue
mineral-like (anthropogenic)
Synthetic Zinc/Polycarbonate Composite (Bey-specimen)
Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay
Anthropogenic Mineral Mimic
Ferro-silicate Slag
Industrial Vitrified Slag (High-silica amorphous glass)
Mineral byproduct (Anthropogenic)
Iron Slag
Ferrous Slag (complex silicate and oxide byproduct)
industrial byproduct (anthropogenic)
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
igneous (artificial/anthropogenic)
Fossiliferous Limestone
Calcite (CaCO3) matrix with biogenic fragments
sedimentary
Quartz pebble or seed/crumb
SiO2 (if quartz)
mineral