Granite
Phaneritic Plutonic Felsic Rock
igneous
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Processed Mineral Product) in the encyclopedia
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Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate)
mineral
Hematite
Hematite (Fe2O3)
mineral
Botryoidal Hematite (Kidney Ore)
Iron(III) oxide (Fe2O3)
Mineral
Quartzite
Quartzite (SiO2)
metamorphic
Shale or Siltstone
Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)
sedimentary
Yellow Jasper
SiO2 (Silicon Dioxide)
sedimentary
Muscovite Schist
KAl2(AlSi3O10)(OH)2 (Muscovite) in Schist Matrix
metamorphic
Blue Kyanite in Quartz
Kyanite (Al2SiO5)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Green glass sphere/marble
Soda-lime glass (primarily SiO2, Na2O, CaO)
Man-made object (Simulant)
Gold (10K Alloy)
Aurum (Au) with alloying metals (Cu, Ag, Zn)
mineral
Red Jasper
Jasper (Silicon Dioxide with iron oxide inclusions), SiO2
mineral
Baltic Amber (Butterscotch or Egg Yolk Variety)
Succinite (C10H16O)
Organic Gemstone (fossilized resin)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Asphalt
Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)
Sedimentary
Black Kyanite
Kyanite (Al2SiO5) with carbonaceous inclusions
mineral
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Limonite/Goethite Gossan
FeO(OH)·nH2O (Hydrated iron oxide)
mineral
Quartzite (Engineered Stone)
Silicon Dioxide (SiO2) based synthetic composite
metamorphic
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Mineraloid / Synthetic Glass
Limonite (Iron-rich Gossan/Laterite)
FeO(OH)·nH2O (Hydrated Iron Oxide)
mineral
Goethite
Goethite (FeO(OH))
mineral
Clear Quartz Cluster
Quartz (Silicon Dioxide, SiO2)
mineral
Goethite
Goethite (FeO(OH))
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Silver (Native or Alloyed)
Ag (Argentum)
mineral
Green Slag Glass
Amorphous Silicon Dioxide (with metallic impurities)
Igneous (Anthropogenic)
Red Jasper (beads)
SiO₂ (Silicon Dioxide)
Mineral, variety of chalcedony (microcrystalline quartz)
Green Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Grey Chalcedony (Tumbled)
Chalcedony (SiO2)
mineral
Turquoise color-bead and Hematite necklace
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Kidney Stone
Calcium Oxalate (CaC2O4), Uric Acid, or Struvite
mineral
Limonite (Ironstone) Concretion
FeO(OH)·nH2O (Hydrous ferric oxide)
sedimentary
Clay (as a rock-forming material)
Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)
Mineral