Iron Slag
Ferrous Slag (complex silicate and oxide byproduct)
Category
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
Iron Slag
Ferrous Slag (complex silicate and oxide byproduct)
Quartz pebble
Silicon dioxide (SiO2)
Educational Geologic Collection
Mixed Mineral and Rock Collection (Various compositions)
Sandstone (likely Quartz Sandstone)
Arenite (composed primarily of SiO2)
Yellow Jasper
Silica (Silicon Dioxide, SiO2) with iron inclusions
Sandstone
Arenite (primarily composed of SiO2)
Chert (Flint)
Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)
Chert (specifically Flint or Dark Chert)
Silicon Dioxide (SiO2)
Sandstone
Arenite
Chert (Flint)
Microcrystalline Quartz (SiO2)
Jasper with Quartz inclusion
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Diamond (Faceted Gemstone)
Native Carbon (C)
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Coral Rock (Coquina)
Biogenic Limestone (Calcium Carbonate - CaCO3)
Sandstone
Arenite (Siliclastic sedimentary rock), SiO2 + various minerals
Sandstone
Arenite (SiO2 based with various mineral cements)
Sandstone
Quartz Sandstone (predominantly)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Chert (specifically Tan/Gray Chert)
Microcrystalline quartz (SiO2)
Sandstone (Water-worn Pebble)
Clastic sedimentary rock (primarily SiO2)
Shungite
Shungite (carbon-rich Precambrian mineraloid)
Conglomerate (or Breccia)
Clastic Sedimentary Rock (Conglomeratic)
Chert (White-Grey variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (often referred to as Flint)
Chert (Microcrystalline Quartz, SiO2)
Quartz
Quartz (SiO₂)
Sandstone (with potential iron-oxide staining)
Arenite (primarily SiO2)
Chert (Chalcedony)
Microcrystalline quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Picture Jasper
SiO2
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Potassium Feldspar
Orthoclase (KAlSi3O8)
Chalcedony (Agate/Seashell replacement)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Chert (Flint)
Chert (SiO2)
Chert (Flint/Jasper)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Emerald
Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium
Chert (Flint)
Chert (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Barite (Desert Rose or Cockscomb variety)
Barium Sulfate (BaSO4)
Orpiment
Orpiment (As2S3)