Coquina
Bioclastic Limestone (Coquina)
Category
Browse man made material (constructed) specimens identified by the Rock Identifier community.
Coquina
Bioclastic Limestone (Coquina)
Asphalt aggregate (crushed stone in bitumen)
Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen
Opalite
Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Granite Pebble
Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
Chert (Jasper/Flint var.)
Silicon Dioxide (SiO2)
Chert (Chert / Flint Variety)
Microcrystalline / Cryptocrystalline Quartz (SiO2)
Chert (often called Flint or River Stone)
Microcrystalline alpha-quartz (SiO2)
Marble
Recrystallized Calcite (CaCO3) Rock
Rainbow Hematite (Man-made/Treated)
Tumbled Hematite with Titanium/Anodized coating (Iron(III) oxide, Fe2O3)
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Limestone
Calcium Carbonate (CaCO3)
White Marble
Recrystallized Calcite (CaCO3)
Fossiliferous Limestone
CaCO3 (principally Calcite or Aragonite)
Diamond
Carbon (C)
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (SiO2, often with CaCO3 or Fe2O3 cement)
Diamond
Native Carbon (C)
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
Onyx (Black) and Mother of Pearl Inlay
Silicon Dioxide (SiO2) for Onyx; Aragonite (CaCO3) for Mother of Pearl
Red Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Chert (Chert / Flint)
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Cherty Shale / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert
Silicon dioxide (SiO2)
Diamond ring
Diamond, crystalline carbon (C)
Limestone
Calcareous sedimentary rock (CaCO3)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Chert Nodule
Microcrystalline Quartz (SiO2)
Chert (often called Flint in archaeological contexts)
Silicon Dioxide (SiO2)
Rough Diamond
Pure Carbon (C)
Chert (specifically Flint)
Chert (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Polished River Pebble)
Chert (SiO2)