Chert (Nodule)
Silicon Dioxide (SiO2)
Category
Browse not a rock (man made industrial metal) specimens identified by the Rock Identifier community.
Chert (Nodule)
Silicon Dioxide (SiO2)
Banded Agate
Silicon Dioxide (SiO2)
Diamond
Carbon (C)
Marble
Recrystallized Calcite / Dolomite (CaCO3)
Diamond
Diamond (C)
Quartzite
Quartzite (primarily SiO2)
Ruby
Corundum (Al2O3 with Chromium)
Garnet in Schist (Polished Tower)
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
Fluorite
Calcium fluoride (CaF2)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Banded Agate (with possible Chalcedony layers)
Silicon dioxide (SiO2)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Chert (Chert Nodule)
Microcrystalline quartz (SiO2)
Yellow Quartz (Citrine or Yellow Chalcedony)
Silicon Dioxide (SiO2)
Kyawthuite
Kyawthuite (Bi3+Sb5+O4)
Bog Iron / Limonite Concretion
Goethite/Limonite mixture (FeO(OH)·nH2O)
Quartz with Iron Staining
Silicon Dioxide (SiO2)
Iron Ore (Limonite and Hematite)
Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
Chert (Arrowhead Preform)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert
Microcrystalline silica (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Diamond
Natural Carbon (C)
Banded Iron Formation (BIF)
Magnetite-Hematite Chert (Banded Iron Formation)
Pink Sapphire
Corundum (Al2O3 with Chromium/Titanium/Iron traces)
Quartzite Pebble
Quartzite (mostly SiO2)
Black Tourmaline
Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4
Diamond
C (Carbon)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Goethite
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2) with artificial pigment
Black Kyanite
Kyanite (Al2SiO5) with carbonaceous inclusions
Rose Quartz
Silicon dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
Rough Diamond
Diamond (pure carbon, C)
Orange Calcite
Calcium Carbonate (CaCO3)
Milky Quartz with Tourmaline and Iron Oxides
Silicon Dioxide (SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Bauxite
Bauxite (Al2O3·nH2O)
Pegmatite with Smoky Quartz and Feldspar
Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8)
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)