Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Mineraloid / Synthetic Glass
Category
Sedimentary (Man Made Conglomerate)
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Man Made Conglomerate) in the encyclopedia
View all →
Green Jasper Conglomerate
Silica-cemented polymictic conglomerate
sedimentary
Red Jasper Conglomerate (Puddingstone)
Silicified Conglomerate (SiO2 with inclusions)
sedimentary
Aventurine
Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Ferro-silicate Slag
Industrial Vitrified Slag (High-silica amorphous glass)
Mineral byproduct (Anthropogenic)
Tumbled black stone, likely black obsidian
Obsidian; volcanic glass, typically rhyolitic composition (SiO₂-rich)
igneous
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Mineraloid (synthetic)
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Man-made Crystal (Lead Glass)
Lead oxide-doped Silica Glass (approx. SiO2 + PbO)
Mineraloid/Synthetic Material
Man-made Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating/dye
mineral
Purple glassy pebble, possibly slag glass
Unidentified; likely man-made glass rather than a natural mineral
mineral
Goldstone (brown goldstone)
Man-made aventurine glass, typically copper-bearing silica glass
gemstone
Green sea glass (likely slag glass or bottle glass)
Man-made soda-lime silicate glass; not a naturally occurring mineral
mineral
Green Sea Glass
Amorphous Silica (man-made glass), SiO2 + additive metal oxides
mineraloid / anthropogenic (man-made origin)
Puddingstone (specifically Michigan/Gowganda Puddingstone)
Quartzite Conglomerate (Gowganda Formation)
sedimentary
Conglomeratic Sandstone
Clastic Sedimentary Rock
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Tumbled black obsidian (likely)
Volcanic glass; chiefly silica-rich rhyolitic glass (SiO₂)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Rounded polymictic conglomerate (pebble)
Clast-supported conglomerate; mainly quartz- and feldspar-bearing lithic clasts in a sandy matrix
sedimentary
Breccia
Clastic Breccia
sedimentary
Conglomerate (with Jasper pebble)
Conglomerate / Microcrystalline Quartz (Jasper)
sedimentary
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral
Smelter Slag
Anthropogenic Silicate Slag
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Conglomerate (likely iron-stained, mixed-pebble conglomerate)
Polymictic conglomerate; rounded clasts cemented in a finer-grained matrix
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
metamorphic (man-made / anthropic)
Brick
Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)
Man-made material (constructed)
Jasper Conglomerate (Puddingstone)
Jasper Conglomerate (Siliceous Sedimentary Rock)
sedimentary
Jasper Conglomerate (specifically Puddingstone)
Jasper Conglomerate (Siliceous sedimentary rock)
sedimentary
Quartz Pebble in Sandstone matrix
Quartz Conglomerate (SiO2 matrix)
sedimentary
Puddingstone (Quartzite Pebble)
Metaconglomerate / Jasper-Quartzite Pebble
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Libyan Desert Glass
Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)
mineral (Tektite/Impactite)
Conglomerate (possibly concrete-like natural breccia)
Lithified, poorly sorted clastic rock with angular to subrounded mineral and rock fragments in a finer matrix
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Sedimentary Pebble
Sedimentary Rock Fragment
sedimentary