Aura Quartz (Titanium or Angel Aura coated)
Silicon Dioxide (SiO2) with metallic vapor coating
Category
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Aura Quartz (Titanium or Angel Aura coated)
Silicon Dioxide (SiO2) with metallic vapor coating
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Banded Flint (Chert)
Silicon Dioxide (SiO2)
Limonite (Ironstone)
Limonite (mixture of hydrated iron(III) oxide-hydroxides)
Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
Vuggy Limestone
Calcium Carbonate (CaCO3) with Quartz/Calcite inclusions
Petrified Wood
Silicified Wood (SiO2 permineralization)
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within metamorphic/igneous matrix
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
Diorite (River Pebble)
Diorite
Obsidian
Volcanic Glass (Amorphous SiO2)
Aquamarine with Ruby Accent
Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)
Red Garnet
Garnet Group (e.g., Pyrope, Almandine, Spessartine, Grossular, Andradite, Uvarovite)
Sandstone
Arenite
Sandstone
Arenite (SiO2 based)
Sandstone (with secondary weathering/concretion)
Arenite (composed primarily of Quartz, SiO2)
Milky Quartz with Mineral Inclusions
Silicon Dioxide (SiO2)
Botryoidal chalcedony (possibly agate/geode material)
Microcrystalline quartz, SiO₂; commonly chalcedony with quartz-lined cavities and iron-oxide staining
Quartz
Quartz (SiO₂)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz (Iron-Stained / Yellow Quartz)
Silicon Dioxide (SiO2)
Gneiss
Gneiss
White Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz with Calcite / Geode Fragment
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)
Fluorite
Calcium Fluoride (CaF2)
Red Sandstone
Arenite (SiO2 with Fe2O3)
Petrified Wood (Agatized/Silicified Wood)
Silicified Wood (SiO2)
Dendritic Agate
Chalcedony (Silicon Dioxide) with Manganese or Iron Oxide inclusions
Sphalerite with Galena and Calcite / Quartz display specimens
Zinc Iron Sulfide (Zn,Fe)S with Quartz (SiO2) / Aquamarine / Fluorite
Quartz (Grain)
Silicon Dioxide (SiO2)
K-Feldspar / Granite Pegmatite
Potassium Feldspar (Microcline/Orthoclase) with Quartz
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Beach Pebble (Basalt / Greywacke)
Basalt (or fine-grained Sedimentary Greywacke)
Quartz Pebble
Silicon Dioxide (SiO2)
Scolecite
Scolecite (CaAl2Si3O10·3H2O)
Quartz (Peach/Pink Variety)
Silicon Dioxide (SiO2)
Amethyst
SiO2 (Silicon Dioxide with iron impurities)