Jasper (Iron-stained Quartzite/Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Category
This Image Does Not Display A Rock, Mineral, Or Geological Specimen. It Shows A Human Hand Wearing A Ring.
Browse this image does not display a rock, mineral, or geological specimen. it shows a human hand wearing a ring. specimens identified by the Rock Identifier community.
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint variety)
Microcrystalline Silica (SiO2)
sedimentary
Amethyst (Faceted)
Silicon Dioxide (SiO2) with iron impurities
mineral
Pink Granite (Gneissic transition)
Pink Biotite Granite
igneous
Serpentinite
Serpentinite (a rock composed predominantly of serpentine group minerals)
metamorphic
Gneiss
Gneiss
metamorphic
Ruby in Zoisite
Ruby (Corundum, Al2O3) in Zoisite (Calcium aluminum silicate hydroxide, Ca2Al3(SiO4)3(OH)) with some Hornblende
Metamorphic Rock (specifically a rock composed of minerals)
Blue Agate (Dyed)
Silicon Dioxide (SiO2)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2 (Actinolite/Tremolite series)
metamorphic
Amethyst (in jewelry)
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Aquamarine (Pendant) and Jasper (Beads)
Beryllium aluminum silicate (Be3Al2Si6O18) with Chalcedony (SiO2)
mineral
Basalt
Afanitic Mafic Basalt
igneous
Jasper (specifically Red Jasper)
Silicon Dioxide with Iron Oxides (SiO2 + Fe2O3)
sedimentary
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Okenite (in Zeolite matrix)
Okenite (CaSi2O5 · 2H2O)
mineral
Diamond (in a jewelry setting)
Cubic Carbon (C)
mineral
Anthracite Coal
Anthracite
metamorphic
Vesicular Basalt (commonly mistaken for Slag)
Scoriaceous Basalt (composed primarily of Plagioclase Feldspar and Pyroxene)
igneous
Chert (and Jasper blend)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Basalt (Weathered River Stone)
Basalt (Extrusive Mafic Igneous Rock)
igneous
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
mineral
Granite (Weathered)
Phaneritic Felsic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Greywacke (River Pebble)
Greywacke sandstone with quartz veining
sedimentary
Chert (Iron-stained)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert (specifically Jasper)
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)
mineral
Sandstone (Greywacke)
Sandstone (SiO2 enriched with lithic fragments)
sedimentary
Pink Granite (Alkali Feldspar Granite)
Phaneritic Felsic Igneous Rock (composed primarily of KAlSi3O8, SiO2, and NaAlSi3O8)
igneous
Lazulite
Lazulite (MgAl2(PO4)2(OH)2)
mineral
Fire Agate
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
mineral
Dyed Pink Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Quartzite River Cobble
Quartzite (primarily SiO2)
metamorphic
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Limestone with Chert or Siltstone bands
Sedimentary carbonate rock (CaCO3) often with siliceous impurities
sedimentary
Apatite
Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))
mineral
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide impurities), SiO2
mineral
Sandstone
Arenite (primarily composed of SiO2)
sedimentary