Strawberry Quartz (Aventurine)
Silicon Dioxide with Hematite/Lepidocrocite inclusions (SiO2)
mineral
Category
Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite)
Browse mineral like byproduct (often mistaken for igneous rock or meteorite) specimens identified by the Rock Identifier community.
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Granite
Granite (Felsic Plutonic Rock)
igneous
Chrysocolla (with Quartz and Malachite)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
mineral
Iron Meteorite (Candidate)
Siderite (Meteoric Iron)
igneous
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Chondrite Meteorite
Ordinary Chondrite (OC)
Mineral (Extraterrestrial)
Quartz Geode
Crystalline Quartz (SiO2) within a sedimentary/igneous host
mineral
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Rock Fragment with Calcite/Quartz Vein
Polymictic Rock Fragment (SiO2 / CaCO3)
igneous
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Dendritic Siltstone (or Mudstone)
Siltstone with Manganese Oxide dendrites
sedimentary
Mixed collection of natural stones
Several unidentified lithologies, likely including basalt, granite, quartzite, sandstone, and weathered metamorphic rocks
igneous, metamorphic, sedimentary
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Greenstone
Protolith: Basaltic rock
metamorphic
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Quartzite (River Cobble)
Quartzite (SiO2)
metamorphic
Native Gold Nugget
Native Gold (Au)
mineral
Basalt with Calcite Veins
Extrusive Igneous Rock
igneous
Concretion with Geode Cavity
Ferruginous Sandstone Concretion with Quartz Center
sedimentary
Mixed Tumbled Rocks and Minerals Collection
Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)
mineral
Pegmatite
Igneous Pegmatite
igneous
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite mica)
metamorphic
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Quartz (Iron-stained)
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Mahogany Obsidian
Obsidian (Volcanic Glass) with Hematite/Magnetite inclusions
igneous
Muscovite Mica
Muscovite KAl2(AlSi3O10)(OH)2
mineral
Quartz Vein Rock
Quartz (Silicon Dioxide, SiO2)
igneous
Magnetite-rich iron ore
Magnetite (Fe₃O₄), possibly with hematite and silicate matrix
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Schist
Mica Schist (Metamorphic rock)
metamorphic
Granite (Giallo Ornamental / Venetian Gold)
Granite (composed mainly of Quartz, Feldspar, Biotite, and Garnet)
igneous
Quartzite Countertop
Quartzite (SiO2 dominated)
metamorphic
Granodiorite (Weathered)
Granodiorite
igneous
Green Obsidian Sphere (man-made glass)
Vitreous Silica with Chromium/Iron additives
mineralogical simulant
Ruby / Pink Sapphire
Corundum (Al2O3 with Chromium impurities)
gemstone
Tektite (Indochinite)
Tektite (High-silica natural glass, primarily SiO2 with Al2O3)
igneous
Turtleback Rock (Brecciated Diabase / Granite)
Brecciated hypabyssal intrusive rock
igneous