White Quartz (Carved or Tumbled)
Silicon Dioxide (SiO2)
mineral
Category
Anthropogenic (Man Made Industrial Deposit)
Browse anthropogenic (man made industrial deposit) specimens identified by the Rock Identifier community.
Bituminous Coal
Bituminous coal (Carbonaceous sedimentary rock)
sedimentary
Olivine (in Peridotite/Dunite form)
Magnesium Iron Silicate (Mg,Fe)2SiO4
igneous
Olivine (Peridot when gem-quality)
Olivine Group (Magnesium Iron Silicate, (Mg,Fe)2SiO4)
mineral
Unknown Organic Object (likely a berry or fruit)
Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.
Organic Material (likely a fruit or berry)
Granite Glacial Erratic
Phaneritic Plutonic Felsic Rock (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 – SiO2)
igneous
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)
igneous
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Diamond (or Diamond Simulant)
Carbon (C) - Native Element
mineral
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Quartzite (specifically a river-worn pebble)
Quartzite (primarily SiO2)
metamorphic
Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Cubic Zirconia
Zirconium dioxide (ZrO2)
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Diamond (Round Brilliant Cut)
Diamond (Pure Carbon, C)
mineral
Diamond in Kimberlite
Kimberlite host rock with C (Carbon) inclusion
igneous
Olivine (Peridotite)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Gastly (Trick or Trade Halloween Series)
Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)
Mineral (Synthetic - Paper and Ink Polymorph)
Kimberlite
Kimberlite
igneous
Peridot
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
Mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Sandstone (lithic wacke)
Arenite / Lithic Wacke (mostly SiO2 with rock fragments)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Marble
Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.
Metamorphic Rock
Black Diamond / Black Sapphire
Carbon (C) or Corundum (Al2O3)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Mineral
Rutilated Quartz
SiO2 with TiO2 inclusions
Mineral
Granite
Granite
Igneous
Olivine (Peridot)
Olivine (Mg, Fe)2SiO4
mineral
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Fluorite Tower
Calcium Fluoride (CaF2)
mineral
Sandstone
Arenite (SiO2 based with quartz grains)
sedimentary
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Blue Apatite
Chlorapatite / Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Banded Iron Formation (BIF)
Banded Iron Formation (Magnetite-Hematite-Chert)
sedimentary
Diamond
Diamond (C)
mineral
Diamond (in a metal ring setting)
Diamond (Pure Carbon, C)
mineral
Note: Item is not a geological specimen
Guitar Components (Steel, Nickel, Plastic, Wood)
Synthetic/Consumer Product
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
mineral
Olivine Peridotite
Peridotite (comprising Olivine (Mg,Fe)2SiO4 and Pyroxene)
igneous