Goldstone (Red)
Aventurine Glass
Man-made material (Simulated Mineral)
Category
Industrial By Product
Browse industrial by product specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Sulfur (on Matrix)
Native Sulfur (S8)
mineral
Pumice (Scoria variety)
Scoria (Vesicular Basalt)
igneous
Fluorite (Fluorescent)
Calcium Fluoride (CaF2)
mineral
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Northern Shoveler Duck (Note: This is a biological specimen, not a rock)
Spatula clypeata
not a rock (biological/ornithological)
Basalt (River Pebble)
Extrusive mafic igneous rock
igneous
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Brachiopod Fossil in Limestone
Phylum Brachiopoda, Class Rhynchonellata
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Fossiliferous Limestone
Calcium carbonate (CaCO3) with marine fossils
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Siltstone
Siltstone (composed of clastic quartz and feldspar)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Hematite Nodules (Moqui Marbles)
Ferric Oxide (Fe2O3)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Shale with Iron Staining
Fissile Argillaceous Sedimentary Rock
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Limestone Cobble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Quartz (Milky/Sugar variety)
Silicon Dioxide (SiO2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Limestone Breccia
Sedimentary Breccia (Calcareous)
sedimentary
Fossiliferous Limestone
Fossiliferous Calcilutite / Biomicrite
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
sedimentary
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Ooids (Oolites)
Ooids (composed of Calcium Carbonate / CaCO3)
sedimentary
Banded Iron Formation (BIF)
Magnetite-hematite-chert formation
sedimentary