Blue Slag Glass
Amorphous Silica (Byproduct of smelting)
Antropogenic (Man-made)
Category
Man Made Rock (Sedimentary Analogue)
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
Learn about Man Made Rock (Sedimentary Analogue) in the encyclopedia
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Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
man-made glass
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
mineraloid (man-made)
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Anthropogenic (Man-made)
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Anthropogenic (Man-made)
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
man-made material
Coquina
Biogenic Limestone (Coquina)
sedimentary
Banded Jasper / Chert Beach Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Flint / Chert
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Chert (Jasper/Flint var.)
Silicon Dioxide (SiO2)
sedimentary
Chert (often called Flint or River Stone)
Microcrystalline alpha-quartz (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (specifically Flint)
Chert (SiO2)
sedimentary
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
mineral
Turquoise-style beaded bracelet
Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; possibly dyed or composite beads
mineral
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (varieties: Flint or Jasper)
Silicon dioxide (SiO2) / Microcrystalline Quartz
sedimentary
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
igneous
Diorite
Intermediate plutonic igneous rock
igneous
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Cryptocrystalline quartz (SiO2)
sedimentary
Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
sedimentary
Coquina
Bioclastic Limestone (Coquina)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Brecciated jasper (likely red-and-cream jasper)
Jasper, an opaque microcrystalline variety of quartz; primarily cryptocrystalline SiO₂ with iron-oxide staining and possible chalcedony/quartz veining
gemstone
Greenstone
Metamorphic mafic rock (chlorite-actinolite-epidote schist)
metamorphic
Pink Granite
Intrusive Igneous Rock (high K-feldspar content)
igneous
Fossiliferous Limestone (Crinoid stem fossils)
Sedimentary Limestone with Crinoidea ossicles
fossil
Shale or Slaty Mudstone
Argillaceous sedimentary rock
sedimentary
Likely iron-rich rock or weathered metallic mineral fragment
Uncertain; possibly limonite/goethite or iron-bearing slag
mineral
Faceted brown gemstone pendant, likely smoky quartz or champagne topaz
Probably quartz (SiO₂), smoky variety; alternatively topaz (Al₂SiO₄(F,OH)₂)
gemstone
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Green-and-white terrazzo (likely serpentine/marble aggregate)
Composite decorative stone; probable serpentinite (Mg₃Si₂O₅(OH)₄) with white calcite marble fragments in cementitious matrix
metamorphic
Dyed Blue Agate Slice
Silicon Dioxide (SiO2)
mineral
Fossilized Shark Tooth (Fragment)
Elasmobranchii gen. et sp. indet. (Calcium Phosphate / Apatite fossil)
fossil
Industrial Slag
Anthropogenic Vitreous Slag
igneous
Sea Glass
Amorphous Silicon Dioxide (SiO2)
Mineral/Man-made