Lapis Lazuli (Tumbled Stone)
Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (Lazulite-rich Metamorphic Rock)
Category
Browse not a rock or mineral (anthropogenic material) specimens identified by the Rock Identifier community.
Lapis Lazuli (Tumbled Stone)
Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (Lazulite-rich Metamorphic Rock)
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
Rough Diamond
Native Carbon (C)
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2 with Iron Oxide impurities)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Diamond (Green tinted)
Carbon (C) with trace impurities or lattice defects
Diamond
Carbon (C)
Amazonite
K(AlSi3O8) - Microcline variant
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Marble
Recrystallized Calcite (CaCO3)
N/A (The provided image is a storyboard/digital document)
Marble
Metamorphosed Limestone/Dolomite
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
Schist
Mica Schist (primarily consisting of muscovite, biotite, and quartz)
Red Jasper (beads)
Silicon Dioxide (SiO2) with iron inclusions
Unakite
Unakite (altered granitic rock)
Wallboard/Drywall (Gypsum-based)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Banded Quartz
Silicon Dioxide (SiO2)
Druzy Quartz Geode (Vug)
Silicon Dioxide (SiO2)
Clear Quartz Crystal (Herkimer Diamond style)
Silicon Dioxide (SiO2)
Schist
N/A (a rock type, not a mineral formula)
Amber
Succinite (fossilized resin)
Granite
Granite (a common igneous rock)
Greenschist
Greenschist (chlorite-epidote schist)
Carnelian
Chalcedony (SiO2) with iron oxide impurities
Pyrite
Iron Disulfide (FeS2)
Quartzite
Quartzite (composed primarily of SiO2)
Quartz / Limestone Gravel
SiO2 (Silicon Dioxide) and CaCO3 (Calcium Carbonate)
Amethyst
Amethyst (SiO2 with Iron impurities)
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
River Rock (Greywacke/Sandstone)
Lithic Wacke
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
Gossan with Copper Carbonate (Chrysocolla/Malachite)
Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)
Agate Geode Slice (with Druzy Quartz)
Silicon Dioxide (SiO2)
Diamond (as set in a gold ring)
Carbon (C)
Diamond
Cubic Carbon (C)
Diamond
Carbon (C)
Coquina / Limonite-stained Limestone
Sedimentary Limestone with Iron Oxyhydroxide (FeO(OH)·nH2O)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3/FeO(OH) cementing agents)
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz crystals
Pyrite
Iron Disulfide (FeS2)