Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Mineraloid (Industrial byproduct)
Category
Mineraloid Like Synthetic Material
Browse mineraloid like synthetic material specimens identified by the Rock Identifier community.
Learn about Mineraloid Like Synthetic Material in the encyclopedia
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Unakite
Epidotized Granite
metamorphic
Serpentinite (or Green Quartz Pebble)
Mg3Si2O5(OH)4 (Serpentine group) / SiO2 (Quartz mix)
metamorphic
Milky Quartz Chip
Silicon Dioxide (SiO2)
mineral
Likely weathered quartz-rich stone or fossil fragment
Indeterminate; possibly quartz-bearing sandstone, iron-stained quartz, or a fragmentary fossil
mineral
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Quartz Sand
Silicon Dioxide (SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement)
fossil
Flint
Chert (Silicon dioxide, SiO2)
sedimentary
Chert (often called Flint when dark)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Micrometeorite (Spherule)
Extraterrestrial Accretion Spherule
mineral
Sandstone (River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Spherulitic Agate / Moss Agate
Chalcedony (SiO2) with mineral inclusions
mineral
Sandstone Pebble
Sandstone (primarily Quartz, SiO2)
sedimentary
Sandstone
Sandstone (SiO2-dominated clastic rock)
sedimentary
Septarian Nodule (Galt)
Calcareous concretion / Septarian concretion
sedimentary
Greenschist
Greenschist (chlorite schist)
metamorphic
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Concrete Fragment
Hardened Portland cement and mineral aggregate
sedimentary (anthropogenic)
Chert (Flint Nodules)
Microcrystalline quartz (SiO2)
sedimentary
Coquina
Biogenic Limestone (Coquina)
sedimentary
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
sedimentary
Sandstone
Arenite (clastic sedimentary rock)
sedimentary
Sandstone
Arenite (predominantly SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (specifically Banded Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
sedimentary
Brick fragment (Man-made material)
N/A (Fired clay)
man-made
Blue Topaz (specifically London Blue or Swiss Blue based on color saturation)
Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)
mineral
Basalt with Epidote (Greenstone)
Epidote-bearing Metabasalt
metamorphic
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
mineraloid (man-made)
Slag (Industrial Glass/Metal Waste)
Artificial silicate/ferro-silicate byproduct
Mineraloid (Industrial byproduct)
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
sedimentary
Chert Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Asphalt (Road Aggregate)
Bituminous conglomerate
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Greenstone (Metabalt)
Chlorite-actinolite schist (Greenstone)
metamorphic
Sedimentary Sandstone (Sandstone Slab)
Arenite (SiO2 with Fe2O3 staining)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Goldstone (Brown/Gold)
Aventurine Glass (Man-made glass with Copper inclusions)
gemstone
Fossil Snail
Gastropoda (fossilized)
fossil
Fossil Snail
Gastropoda (fossilized)
fossil