Shale or Slaty Mudstone
Argillaceous sedimentary rock
Category
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
Shale or Slaty Mudstone
Argillaceous sedimentary rock
Pyrite
Iron Sulfide (FeS2)
Goldstone (Red)
Aventurine Glass
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Chert
Microcrystalline Quartz (SiO2)
Tektite
Impactite (Natural Silicate Glass)
Smoky Quartz Cluster
Smoky Quartz (Silicon Dioxide - SiO2)
Banded Jasper / Chert Beach Pebble
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert / Flint
Silicon Dioxide (Microcrystalline Quartz, SiO2)
Flint / Chert
Microcrystalline quartz (SiO2)
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (Jasper/Flint var.)
Silicon Dioxide (SiO2)
Chert (often called Flint or River Stone)
Microcrystalline alpha-quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Flint / Chert Pebble
Microcrystalline Quartz (SiO2)
Flint
Silicon dioxide (Microcrystalline Quartz / Chert)
Chert (or Flint)
Microcrystalline quartz (SiO2)
Chert (Jasper/Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Chert (Honey Chert / Flint)
Silicon Dioxide (SiO2)
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Diorite
Intermediate plutonic igneous rock
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
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
Limonite (Iron Ore)
Hydrous Iron Oxide (goethite, lepidocrocite)
Pink Marble
Recrystallized Limestone (Calcium Carbonate, CaCO3)
Chert (specifically Flint)
Chert (SiO2)
Blue Goldstone
Synthetic glass with copper or cobalt/manganese inclusions
Blue Goldstone
Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)
Blue Goldstone
Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
Goldstone (Brown)
Aventurine glass
Iron Slag
Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)
Shale
Argillite / Shale
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
Chert (Flint)
Microcrystalline Silica (SiO2)