Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
Category
Sedimentary (Man Made Conglomerate)
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
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Brecciated jasper or brecciated chert
Silica-rich breccia, chiefly microcrystalline quartz (SiO₂), with iron-oxide staining
sedimentary
Breccia
Clastic Breccia (General mineral composition depends on fragments, often SiO2 or CaCO3)
sedimentary
River Gravel
Polymictic gravel and pebble aggregate
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Conglomerate with Quartz Inclusions
Conglomerate (clastic sedimentary rock) with internal Quartz (SiO2)
sedimentary
Conglomeratic Sandstone
Clastic Sedimentary Rock
sedimentary
Quartz (with inclusions / Sandstone fragment)
Silicon Dioxide (SiO2)
mineral
Conglomeratic breccia
Clast-supported polymictic conglomerate/breccia, cemented by silica- or carbonate-rich matrix
sedimentary
Pea Gravel / River Gravel
Unconsolidated Clastic Sedimentary Aggregate
sedimentary
River Pebble
Weathered Sedimentary Rock Fragment
sedimentary
Waterworn Pebble / Quartzite
Metamorphic/Sedimentary rock fragment
sedimentary
River Pebble (Granite/Sandstone Pebble)
Rounded Quartz/Feldspar Gravel Clast
igneous
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Sedimentary Rock (possibly composed of various minerals)
Puddingstone (Jasper Conglomerate)
Quartzite Conglomerate (SiO2 matrix with Jasper/Quartz pebbles)
sedimentary
Puddingstone (Gowganda Conglomerate)
Polymictic Conglomerate (SiO2 matrix with jasper and quartz inclusions)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble in Sandstone matrix
Quartz Conglomerate (SiO2 matrix)
sedimentary
River Gravel
Polymictic Gravel / Detrital Rock Aggregate
sedimentary
Gravel and Pebbles
Unconsolidated rock fragments (clastic sediment)
sedimentary
River Pebble (Granite / Sandstone Cobble)
Stream-rounded Rock Pebble
sedimentary
Grey River Pebble (Greywacke / Basalt)
Stream-rounded silicate rock pebble
sedimentary
Hag Stone
Perforated Quartz Pebble / Sedimentary Rock
sedimentary
River Pebble (Gravel)
Rounded clastic sediment
sedimentary
Puddingstone (Jasper-Conglomerate)
Jasper Conglomerate (SiO2 matrix with Jasper clasts)
sedimentary
Puddingstone (Gowganda)
Jasper-clast Polymictic Conglomerate (Gowganda Formation)
sedimentary
River Pebble (Gravel)
Clastic sedimentary rock (likely Siltstone or Mudstone pebble; SiO2 with various impurities)
sedimentary
Gravel and Pebbles
Unconsolidated rock fragments / detrital sediment
sedimentary
Gravel and River Pebbles
Unconsolidated rock fragments / Detrital sediment
sedimentary
Unidentified small rocks or gravel
sedimentary
River Pebble (Gravel Pebble)
Stream-rounded Rock / Siliciclastic Pebble
sedimentary
Black Beach Pebble (Basalt / Slate Pebble)
Rounded Fine-Grained Clastic / Igneous Rock Pebble
sedimentary
Common River Pebbles and Stones
Mixed natural stream gravel / siliciclastic pebbles
sedimentary
River Stone (River Pebble)
Rounded Sedimentary Rock (Lithic Clast)
sedimentary
Hagstone (Adder Stone)
Chert or Sedimentary pebble with natural perforation
sedimentary
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
sedimentary
Conglomerate (River Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Puddingstone (Jasper-Conglomerate)
Conglomerate (Silicon Dioxide, SiO2 with impurities)
sedimentary