Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Pyrite
Iron Sulfide (FeS2)
Epidote-bearing Granite (Unakite-like)
Epidotized Granite
Quartzite
Quartzite (SiO2)
Almandine Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Fluorite
Calcium Fluoride (CaF2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Jasper
Silicon dioxide (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (primarily SiO2)
Epidote with Magnetite/Hematite inclusions
Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides
Sandstone (Fluvial Pebble)
Arenite
Coquina
Coquina (Bioclastic Limestone)
Granite
Granite (Felsic Plutonic Rock)
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
Gold Ore (in Quartz/Gossan matrix)
Native Gold (Au) in Limonite/Quartz matrix
Granite
Phaneritic Felsic Igneous Rock
Ironstone (Limonite/Hematite)
Ferruginous Sedimentary Rock (composed largely of Fe2O3 and FeO(OH)·nH2O)
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2) with iron oxide impurities
Agate (Lace Agate Geode Slice)
Silicon Dioxide (SiO2)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Red Carnelian
Carnelian (Silicon Dioxide - SiO2)
Obsidian
Obsidian (Volcanic glass, primarily SiO2)
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2)
Mica Schist
Mica Schist (Schistose metamorphic rock rich in Muscovite/Biotite)
Schist
Mica Schist
Gneiss (Stream-worn Cobble)
Gneiss (Metamorphic rock composed primarily of Quartz, Feldspar, and Mica)
Graywacke with Quartz Veins
Argillaceous Sandstone (Graywacke)
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
Amber
Succinite
Pyrite (on host rock)
Iron Sulfide (FeS2)
Agate
Silicon Dioxide (SiO2)
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) on Sedimentary Host Rock
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Bauxite
Bauxite (Al2O3·2H2O)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with Iron impurities)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2) - variety of Chalcedony
Emerald
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Smoky Quartz
Silicon Dioxide (SiO2)