Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
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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Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Greenschist
Chlorite schist
metamorphic
Greenstone
Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote
metamorphic
Diamond Plate (Steel)
Alloyed Carbon Steel or Aluminum with 'Durbar' pattern
not a rock (Man-made industrial metal)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Amber
Succinite (Fossilized Tree Resin), C10H16O
Organic Mineraloid
Blue Sapphire (Synthetic or Man-made Glass Imitation)
Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic
mineral
Diorite
Intermediate plutonic igneous rock
Igneous
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Quartz (worked as a tool or artifact)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Red Jasper
Microcrystalline Quartz (SiO2) with Hematite inclusions
sedimentary
Greenstone / Serpentinite
Serpentinite (complex of Mg, Fe, Ni, Al, Zn, Mn silicate minerals including Antigorite, Lizardite, and Chrysotile)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Stainless Steel (Polished)
Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)
Mineral equivalent / Metal Alloy
Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
metamorphic
Greenstone
Metabasalt / Greenstone
metamorphic
Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
metamorphic (man-made/anthropogenic)
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Rhodochrosite in Quartz
Manganese Carbonate (MnCO3)
mineral
Yellow Aventurine
Quartz (SiO2) with iron-bearing inclusions
mineral
Cubic Zirconia (CZ)
Zirconium dioxide (ZrO2)
mineral
Lepidolite and Rubellite (Pink Tourmaline) in Quartz
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite) and Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite/Pink Tourmaline)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Tiger's Eye (Pseudomorph of Quartz after Crocidolite), SiO2
Mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2 permineralization)
sedimentary
Chert (Iron-Stained)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Jasper (Iron-stained Chert)
Silicon Dioxide (SiO2) with impurities of Iron Oxide
sedimentary
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Quartz Druzy on Matrix (with Copper Mineralization)
Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Mineral
Quartz Veined Diorite or Basalt
Crystalline Silicon Dioxide (Quartz) in Mafic Igneous Host (Basalt/Diorite)
igneous
Mystic Topaz
Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)
mineral
Blue Quartzite (Aventurine)
Silicon Dioxide (SiO2) with Dumortierite or Crocidolite inclusions
metamorphic
Pyritic Quartzite
Metequartzite with FeS2 (Pyrite) inclusions
metamorphic
Granite (Orthoclase rich)
Granite (composed primarily of Quartz and Potassium Feldspar KAlSi3O8)
igneous