Banded Agate
Cryptocrystalline variety of Quartz (SiO2)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Banded Agate
Cryptocrystalline variety of Quartz (SiO2)
Banded Agate
Microcrystalline Quartz (SiO2) with impurities
Nephrite Jade
Tremolite-Actinolite solid solution series (Ca2(Mg,Fe)5Si8O22(OH)2)
Banded Iron Formation (Chert/Hematite)
Banded Iron Formation (BIF)
Serpentine
Antigorite/Lizardite/Chrysotile ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)
Hematite (Nodular or Botryoidal)
Iron(III) oxide (Fe2O3)
Serpentine (Serpentinite)
Antigorite, Lizardite, and Chrysotile: (Mg,Fe)3Si2O5(OH)4
Quartz / Rock Crystal
Silicon Dioxide (SiO2)
Red Sandstone
Arenite (Ferruginous Sandstone)
Blue Sapphire
Corundum (Al2O3)
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Basalt
Mafic Igneous Rock (composed of plagioclase feldspar and pyroxene)
Blue Tiger's Eye (Hawk's Eye)
Silicified Crocidolite (Pseudomorph of Quartz after Crocidolite), SiO2
Red Scoria
Scoria (Vesicular Basalt/Andesite)
Blue Slag Glass
Man-made Silicon Dioxide (Amorphous)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Amethyst
Quartz (Silicon Dioxide with Iron impurities), SiO2
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
Moonstone
Orthoclase Feldspar (formula: (K,Na)AlSi3O8)
Slag
Anthropogenic Vitrification Product / Silicate Slag
Granite
Phaneritic Felsic Igneous Rock
Scoria (Lava Rock)
Scoria (Extrusive Igneous Rock / Mafic Silicates)
Script Jasper
Silicon Dioxide (SiO2) with impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with Fe3+ impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with impurities of iron)
Amethyst
Quartz (Silicon Dioxide) with Iron impurities, SiO2
Amazonite
Amazonite (KAlSi3O8)
Amethyst (Tumbled/Water-worn)
Silicon Dioxide (SiO2)
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
Amethyst Cluster
Silicon Dioxide (SiO2) with iron impurities
Quartzite
Quartzite (SiO2)
Turquoise in Matrix
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Carnelian
Carnelian (SiO2 with Iron Oxide impurities)
Quartzite
Quartzite (SiO2)