Quartz Conglomerate
Quartz Conglomerate (clastic sedimentary rock)
sedimentary
Category
Anthropogenic (Man Made Material)
Browse anthropogenic (man made material) specimens identified by the Rock Identifier community.
Granite
Phaneritic Acidic Igneous Rock (Granite)
igneous
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 based)
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Siltstone
Siltstone (primarily composed of SiO2, Al2O3, and phyllosilicates)
sedimentary
Fossiliferous Limestone (Coquina / Shell Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Quartz River Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
Reddish Brown Claystone or Siltstone
Argillite / Siltstone / Claystone
sedimentary
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Mineral
Sandstone Chert/Quartzite
Silicon Dioxide (SiO2) - Sedimentary Sandstone / Orthoquartzite
sedimentary
Chert (Flint variety)
Chert (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Talc
Talc (Mg₃Si₄O₁₀(OH)₂)
Mineral
Pebble (likely a type of sandstone or quartzite pebble)
Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.
Sedimentary rock
Zebra Rock / Zebra Marble
Banded Limestone-Marble Transition
metamorphic
Ironstone Concretion (Limonite/Hematite Nodules)
Ironstone (principally Limonite FeO(OH)·nH2O or Hematite Fe2O3 mixed with silica/clay)
sedimentary
Chert (Common Variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Biotite Schist (likely)
Biotite Schist (rock), Biotite (mineral)
Metamorphic
Serpentine (Serpentinite)
Serpentinite (complex silicate group including lizardite, chrysotile, and antigorite)
metamorphic
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Diamond
Cubic Carbon (C)
mineral
Basalt
Extrusive mafic igneous rock
igneous
Rough Quartz (Alluvial Pebbles)
Silicon Dioxide (SiO2)
mineral
Dragon Blood Jasper
Epidote-rich Quartzite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Garnet Beads
Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)
Mineral
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Sandstone
Arenicola (comprising mostly Quartz, SiO2)
sedimentary
Chalcedony on Matrix
Silicon Dioxide (SiO2)
mineral
Amber
Succinite (fossilized resin)
mineral
Chert (Flint)
Microcrystalline silica (SiO2)
sedimentary
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Obsidian
Volcanic Glass (SiO2)
igneous
Chert (specifically Red Chert/Jasper nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Brown Variety)
Microcrystalline quartz (SiO2)
sedimentary
Biotite (Mica)
Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Silicon Dioxide (SiO2)
sedimentary