Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse industrial byproduct specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Chert (and Flint)
Silicon Dioxide (SiO2)
Red Jasper
Chalcedony/Quartz (SiO2) with iron inclusions
Pink Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2) with iron oxide inclusions
Greenschist
Greenschist (chlorite-epidote schist)
Pegmatite
Granitic Pegmatite
Chert (Red Jasper)
Microcrystalline Quartz (SiO2)
Agate
Banded Chalcedony (SiO2 - Silicon Dioxide)
Arsenopyrite with Quartz
Arsenopyrite (FeAsS)
Schist
Crystalline Metamorphic Rock (Schistose)
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) on Sedimentary Host Rock
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
Serpentine
Serpentinite (complex of Mg, Fe, Ni, Al, Zn, Mn)Si2O5(OH)4
Blue Sapphire
Corundum (Al2O3 - Aluminum Oxide)
Limestone
Calcium Carbonate (CaCO3)
Basalt (with possible quartz veinsing)
Basalt
Quartz River Pebbles
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Chert (Nodule)
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3)
Basalt
Basalt (Mafic volcanic rock)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (Yellow Jasper/Flint pebble)
Microcrystalline Quartz (SiO2)
Diamond
Diamond (pure Carbon, C)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Banded Agate
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Chert (Silicon Dioxide, SiO2)
Desert Rose
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Quartzite Pebble
Quartzite (primarily SiO2)
Milky Quartz with Iron Oxide Staining
Quartz (Silicon Dioxide, SiO2)
Smoky Quartz (with inclusions)
Silicon Dioxide (SiO2)
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
Milky Quartz (Water-Worn Pebble)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Basalt with Weathering Rind
Mafic Volcanic Rock (Primarily Plagioclase and Pyroxene)
Basalt (Water-worn pebble)
Mafic Igneous Rock (primarily Plagioclase feldspar and Pyroxene)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)