Coquina
Bioclastic Limestone
sedimentary
Category
Man Made Object (Metalwork)
Browse man made object (metalwork) specimens identified by the Rock Identifier community.
Granite
Plutonic Igneous Rock (composed typically of SiO2, Al2O3, K2O, Na2O, CaO)
igneous
Sandstone (Pet Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Amazonite
Potassium Feldspar (Microcline) - K(AlSi3O8)
mineral
Amazonite
Amazonite (KAlSi3O8)
mineral
Amazonite
K(AlSi3O8) - Microcline (Var. Amazonite)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Gold (Processed)
Gold (Au)
Metal (Elemental Mineral)
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Jade (likely Nephrite or Jadeite)
Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
Metamorphic rock (for Nephrite and some Jadeite); Mineral (for Jadeite)
Diabase (Greenstone)
Diabase (also known as Dolerite)
igneous
Chert (specifically Tan/Gray Chert)
Microcrystalline quartz (SiO2)
sedimentary
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO₂)
Mineral
Ambergris (Geological/Organic Specimen)
Ambra grisea (Produced by Physeter macrocephalus)
organic material
Red Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Antropogenic (Man-made material)
Quartz (Engineered Quartz Surface)
Silicon Dioxide (SiO2) based composite
mineral (man-made composite)
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
man-made (synthetic rock)
Blue Sea Glass
Amorphous Silica (Anthropogenic glass)
not a rock (man-made origin)
Faceted Glass (Costume Jewelry)
Amorphous Silicon Dioxide with colorants (Glass)
Synthetic/Man-made Material
Goldstone (Synthetic Aventurescence Glass)
Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)
mineraloid / man-made material
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Granite
Granite (Phaneritic Quartz-Feldspar intrusive rock)
Igneous
Diamond
Cubic carbon (C)
mineral
Bog Iron / Limonite Concretion
Goethite/Limonite mixture (FeO(OH)·nH2O)
sedimentary
Sunstone
Oligoclase or Andesine (Feldspar Group), (Ca,Na)((Al,Si)4O8)
mineral
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and mineral impurities
sedimentary
Amethyst (Polished Cabochon)
Silicon Dioxide (SiO2) with iron impurities
mineral
Charoite
Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)
metamorphic
Amethyst and Ruby in Zoisite
Silicon Dioxide (SiO2) and Anyolite (Zoisite-Hornblende-Ruby mix)
mineral and metamorphic rock
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Diamond (in Jewelry)
Carbon (C)
mineral
Pearl
Biogenic CaCO3 (Aragonite and Calcite)
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Yooperlite (Sodalite-rich Syenite)
Sodalite-bearing Syenite
igneous
Jasper
Jasper (Silica/Quartz) - SiO2
mineral
Amazonite
Microcline (variety Amazonite) - K(AlSi3O8)
mineral