Quartz Vein in Host Rock
Quartz (SiO2) in metamorphic host rock (likely schist or phyllite)
metamorphic
Category
Mineral Like Industrial Smelting Waste
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Quartz and Iron Oxide
Quartz (Silicon Dioxide, SiO2) with possible Limonite/Hematite inclusions
mineral
Quartz Pebble (with Hematite Inclusions)
Silicon Dioxide (SiO2)
mineral
Kyanite in Quartz
Al2SiO5 in SiO2
metamorphic
Sandstone
Arenite
sedimentary
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Quartz / Common Opal Transition
Silicon Dioxide (SiO2)
mineral
Corundum (Sapphire variant)
Aluminum Oxide (Al2O3)
mineral
Corundum (variety Ruby/Sapphire)
Aluminum Oxide (Al2O3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz pebble with iron stains
Macrocrystalline Quartz (SiO2)
mineral
Diamond
Carbon (C)
mineral
Quartz vein in metamorphic rock
Crystalline Silicon Dioxide (SiO2) in Host Rock
metamorphic
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Beryl (likely Pink/Morganite variety)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Quartz with Schorl (Black Tourmaline)
Silicon Dioxide (SiO2) with Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) vein cutting through host rock
mineral
Ironstone (with Limonite/Goethite)
Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O and Hematite Fe2O3)
sedimentary
Sandstone with Concretions / Liesegang Rings
Arenite with iron oxide banding
sedimentary
Rough Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)
sedimentary
Orange Calcite with Siderite/Iron Oxide Coating
Calcium Carbonate (CaCO3)
mineral
Granite Pegmatite
Coarse-grained Granite (SiO2 - Aluminum and Alkalies)
igneous
Sandstone
Arenite (specifically Quartz Arenite)
sedimentary
Ruby, Emerald, and Sapphire (Corundum and Beryl)
Corundum (Al2O3) and Beryl (Be3Al2Si6O18)
mineral
Pegmatite (Granitic)
Granitic Pegmatite containing Quartz, Feldspar, and Tourmaline (Schorl)
igneous
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Asphalt Concrete
Bituminous conglomerate
sedimentary
Quartz Druzy (Geode Fragment)
Silicon Dioxide (SiO2)
mineral
Peridot (Olivine)
Olivine, (Mg, Fe)2SiO4
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Schist
Mica Schist
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Iron Meteorite
Iron-nickel alloy (primarily kamacite and taenite)
Meteorite (extraterrestrial material)
Industrial Diamond (Bort or Boart)
Diamond (pure Carbon, C)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Slate
Foliated Metamorphic Rock
metamorphic
Sandstone
Arenite (SiO2 principal)
sedimentary
Diamond (likely facet or crystal shard)
Diamond (C)
mineral
Pegmatite (with smoky quartz and tourmaline/biotite)
Pegmatitic Granite
igneous