Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Category
Mineral Based Composite
Browse mineral based composite specimens identified by the Rock Identifier community.
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Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Ruby / Pink Sapphire
Corundum (Al2O3 with Chromium impurities)
gemstone
Porphyry (Flower Stone)
Porphyritic Basalt or Andesite
igneous
Bumblebee Jasper
Calcite with Arsenic and Sulfur inclusions
sedimentary
Sandstone
Arenite (SiO2 based typically)
sedimentary
Sandstone
Arenite (SiO2 based typically)
sedimentary
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (typically SiO2 based)
sedimentary
Hag Stone
Porous sedimentary rock (typically Flint, Chert, or Sandstone) with naturally occurring holes
sedimentary
Fossilized Shell Fragment / Mother of Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite biomineral
fossil
Gold
Native gold (Au)
mineral
Gold Mineral
Native Gold (Au)
mineral
Sandstone
Arenite (SiO2 based with cement)
sedimentary
Pebble
Lithified rock fragment / Sedimentary clast
sedimentary
Rough Gemstone Grains (Mixed Sapphires and Quartz)
Corundum (Al2O3) and Quartz (SiO2)
mineral
Blue Sphalerite (likely dyed or treated Druzy Quartz/Agate)
Zinc Sulfide (ZnS) or Silicon Dioxide (SiO2) with trade-name enhancement
Mineral
Unakite
Unakite Epidosite (composite of Epidote, Orthoclase, and Quartz)
metamorphic
Shungite
Shungite (carbon-rich Precambrian rock)
mineral
Green Aventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite)
mineral
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary
Sandstone
Arenite (SiO2 based typically)
sedimentary
Milky Quartz with Chlorite/Mica inclusions
Silicon Dioxide (SiO2) with inclusions
mineral
Breccia
Breccia - Clastic sedimentary rock
sedimentary
Green Aventurine (or Xiuyan Jade / Serpentine)
Silicon Dioxide (SiO2) with Fuchsite inclusions or Magnesium Silicate
metamorphic
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
sedimentary
Sandstone
Arenite (primarily SiO2 with trace Fe2O3)
sedimentary
N/A (This is a digital image of a bar graph)
Digital Data Visualization (Bar Chart)
This is not a rock or mineral
Greenstone (Greenschist facies)
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
metamorphic
Sandstone
Arenite (SiO2 primarily)
sedimentary
Limonite (Iron Stone)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
mineral
Mixed Gemstone and Mineral Collection
Silicon Dioxide (SiO2) based minerals and others
mineral
Red Sandstone
Arenite (SiO2 based with Fe2O3)
sedimentary
Sandstone
Arenite (SiO2 based typically)
sedimentary
Tiger Carving (Banded Onyx or Calcite)
Banded Calcite (CaCO3)
sedimentary
Chrysocolla Cuprite
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) and Cu2O (Cuprite)
mineral composite
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Beryllonite
Beryllonite (NaBePO4)
mineral
Polished tree agate (likely)
Chalcedony (microcrystalline SiO₂) with green dendritic/inclusion minerals
mineral
Tektite (Indochinite)
Natural glass (High-silica impact glass)
mineral
Blue Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Jasper Agate (Carnelian Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral