Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Category
Sedimentary Like (Industrial Composite)
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
Learn about Sedimentary Like (Industrial Composite) in the encyclopedia
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Limestone
Calcium Carbonate (CaCO3)
sedimentary
Bentonite Clay
Montmorillonite (Al2H2O12Si4)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
mineral
Blue Quartz
Quartz (SiO2) with inclusions
Mineral
South Korean 100 Won Coin (Cupronickel)
Cupronickel Alloy (75% Cu, 25% Ni)
mineral-based alloy (anthropogenic)
Auriferous Quartz with Pyrite
Gold-bearing Quartz (SiO2 + FeS2 + Au)
mineral
Granite Pegmatite
Coarse-grained Granite (SiO2 - Aluminum and Alkalies)
igneous
Diamond
C (Carbon)
gemstone
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite cobblestone
Quartzite (primarily SiO2)
metamorphic
Anthracite Coal
Anthracite (Carbon-based metamorphic rock)
metamorphic
Rough Blue Sapphire
Corundum (Al2O3)
mineral
Rough Sapphire (possibly Yellow/Green Corundum)
Corundum (Al2O3)
mineral
Granitic Pegmatite
Granitic Pegmatite (principally Quartz, Feldspar, and Mica)
igneous
Diamond
Carbon (C)
gemstone
Slag Glass
SiO2 (Silicon Dioxide) with impurities
man-made glass
Slag (Industrial Glass)
Anthropogenic Vitreous Slag (Post-industrial byproduct)
igneous
Greywacke
Lithic Sandstone (Greywacke)
sedimentary
Greywacke (Sandstone)
Lithic wacke
sedimentary
Gray Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Corundum (variety Ruby/Sapphire)
Aluminum Oxide (Al2O3)
mineral
Yellow Quartz Pebble
SiO2 (Silicon Dioxide)
mineral
Agate
Silicon Dioxide (SiO2)
mineral
Quartz with Mica inclusions (likely Schist or Gneiss host)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)
metamorphic
White Quartz (Carved Heart)
Silicon Dioxide (SiO2)
mineral
Granitic Pegmatite
Pegmatitic Granite
igneous
Agate
Silicon Dioxide (SiO2)
mineral
Granite Pegmatite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Quartz Vein in Host Rock
Quartz (SiO2) in metamorphic host rock (likely schist or phyllite)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Mica Schist
Mica Schist
metamorphic
Quartz (Chalcedony / Rough Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Greenschist
Chlorite schist
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Limestone (specifically Crushed Limestone/Calcictic)
Calcium Carbonate (CaCO3)
sedimentary
Basalt
Aphanitic Mafic Igneous Rock
igneous