Shale
Fissile Mudstone (Shale)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Shale
Fissile Mudstone (Shale)
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Dendritic Agate
Silicon Dioxide (SiO2) with inclusions
Carnelian
Carnelian (SiO2)
Carnelian
Cryptocrystalline Quartz (SiO2)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Basalt
Extrusive mafic rock
Basalt
Extrusive mafic igneous rock
Granite
Granite (Felsic Plutonic Rock)
Vesicular Basalt
Aphanitic Mafic Volcanic Rock
Quartzite
Quartzite (SiO2)
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Chalcedony on Matrix (Botryoidal Agate)
Silicon Dioxide (SiO2)
Carnelian
Silicon Dioxide (SiO2) with iron oxide impurities
Herkimer Diamond (Quartz Crystal)
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Silicon Dioxide (SiO2) with traces of Iron and Manganese
Moss Agate
Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
Banded Carnelian
Carnelian (Silicon Dioxide / SiO2)
Chert (Chert / Flint)
Silicon dioxide (SiO2) - Microcrystalline quartz
Obsidian
Volcanic Glass (SiO2)
Jasper
Silicon dioxide (SiO2)
Serpentine
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Quartzite
Quartzite (primarily SiO2)
Amazonite
Potassium feldspar (KAlSi3O8)
Carnelian
Silicon dioxide / Chalcedony (SiO2)
Carnelian
SiO2 (Silicon Dioxide with Iron Oxide impurities)
Yellow Ochre / Limonite
Limonite (FeO(OH)·nH2O)
Oolitic Chert
Oolitic Microcrystalline Quartz (SiO2)
Rock salt (Halite)
Halite (Sodium Chloride, NaCl)
Greenstone
Protolith: Basaltic rock
Sunstone
(Ca,Na)(Al,Si)4O8 (Oligoclase or Andesine)
Crushed Rock (Basalt)
Basalt (Aphanitic Mafic Igneous Rock)
Moss Agate
Silicon Dioxide with inclusions (SiO2)
Limonite Geode (Ironstone Concretion)
FeO(OH)·nH2O (Hydrated Iron Oxide)