Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Category
Browse anthropogenic (man made industrial byproduct) specimens identified by the Rock Identifier community.
Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Aragonite Star Cluster (or Aragonite Sputnik)
Aragonite (Orthorhombic Calcium Carbonate, CaCO3)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Beach Quartzite (Yellow-stained Quartz)
Quartzite (SiO2 with Iron oxide staining)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Green Kyanite
Kyanite (Al2SiO5)
Quartz (specifically Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Milky Quartz (Quartz Vein)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
Green Fluorite
Calcium Fluoride (CaF2)
Greywacke
Greywacke (Lithofeldspathic Sandstone)
Silver (Sterling Silver)
Argentum (Ag) mixed with Copper (Cu); Formula: Ag+Cu
Diamond
Native Carbon (C)
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
Granite
Granite (Phaneritic Igneous Rock)
Granite Pebble
Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)
Olivine in Basalt matrix
Peridotite (Mg, Fe)2SiO4
Diamond (Uncut Crystal)
Carbon (C)
Garnet-bearing Schist
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
Chert (Quartz Variety)
Chert (Silicon Dioxide, SiO2)
Basalt
Mafic Volcanic Rock (primarily Plagioclase and Pyroxene)
Red Jasper (possibly Wonderstone)
Silicon Dioxide (SiO2) with iron oxide inclusions
Diamond
Native Carbon (C)
Quartzite
Quartzite (mostly SiO2)
Agate (specifically a Blue Agate Geode Slice)
Chalcedony (cryptocrystalline variety of Quartz); SiO2
Quartzite pebble
Quartzite (SiO2)
Scoria (Red Lava Rock)
Scoria (Vesicular Basalt/Andesite)
Diamond
Diamond (pure Carbon, C)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Iron-Stained Quartz (Riverside Cobble)
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
Quartzite
Quartzite (primarily SiO2)
Garnet-Mica Schist
Schist (variety with Almandine Garnet, Fe3Al2(SiO4)3)
Sodium Polyacrylate (Superabsorbent Polymer)
Sodium Polyacrylate [-CH2-CH(COONa)-]n
Quartz Sand Grain
Silicon Dioxide (SiO2)
Rose Quartz with Feldspar Inclusions
Silicon Dioxide (SiO2)
Sandstone Beach Pebble
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)
Sandstone
Arenite (SiO2 + various cementing minerals)
Quartzite (River Pebble)
Metamorphosed Quartz Sandstone (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Quartz (Iron-Stained or Milky Quartz)
Silicon Dioxide (SiO2)