Jasper (Red Jasper)
Silicon Dioxide (SiO₂)
sedimentary
Category
Sedimentary Like (Industrial Composite)
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
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Basalt
Mafic Igneous Pebble
igneous
Granite Glacial Erratic
Granite (Phaneritic Quartz-Feldspar Plutonic Rock)
igneous
Quartzite (or Milky Quartz pebble)
Quartzite (Metamorphosed Sandstone) / Silicon Dioxide (SiO2)
metamorphic
Granite
Granite (phaneritic intrusive felsic igneous rock)
igneous
Green Slag
Anthropogenic Silicate Glass
Mineraloid (Industrial byproduct)
Fossilized bivalve shell
Bivalvia indeterminate; likely a fossil cockle or clam shell, aragonite/calcite replaced or preserved
fossil
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz with Chlorite / Mica inclusions
Silicon Dioxide (SiO2) with phyllosilicate inclusions
igneous
Silver (Native or Alloyed)
Ag (Argentum)
mineral
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Pink Sapphire
Corundum (Al2O3 with chromium and iron traces)
gemstone
Brecciated jasper, possibly rainforest jasper or brecciated rhyolite
Brecciated microcrystalline quartz (SiO₂), commonly called jasper; the green portions may contain epidote, chlorite, or iron-bearing silicates, while red-brown areas are typically hematite or other iron oxides
sedimentary
Schorl (Black Tourmaline)
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)
Calcite
Mineral
Quartzite
Quartzite (SiO2)
metamorphic
Amethyst (Rose-tinted variation)
Silicon Dioxide (SiO2) with trace iron impurities
mineral
Gravel or Crushed Stone
Fragmented Aggregate Stone
sedimentary or igneous fragment
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
igneous
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)
Mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Silicon
Element Si
mineral
Rough Quartz
Silicon Dioxide (SiO2)
mineral
Tiger’s eye
Chatoyant quartz (fibrous quartz pseudomorph after crocidolite), SiO₂
gemstone
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Orange Sapphire
Corundum (Al2O3)
gemstone
Barite Rose
Barium Sulfate (BaSO4)
mineral
Anthracite Coal
Anthracite
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Red Jasper (Silicate Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Pegmatite (Quartz and Feldspar with Dark Minerals)
Igneous Pegmatite
igneous
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Ruby (Raw Corundum)
Corundum (Al2O3:Cr)
mineral
Echinoid Fossil (Sea Urchin Fossil)
Echinoidea
fossil
Opalite (Man-made Glass)
Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)
Synthetic Mineral Simulant / Glass
Schist
Schist (containing Quartz, Mica, and Amphibole)
metamorphic
Magnetite (or Magnetic Iron Ore)
Magnetite (Fe3O4)
mineral
Ruby (varietal of Corundum)
Corundum (Al2O3:Cr)
gemstone
Serpentine / Serpentinite (with Weathering Crust)
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Magnetite (Lodestone variant potential)
Magnetite (Fe3O4)
mineral