Jasper and Mudstone Composite
Silicified Sedimentary Rock / Jasperoid Pebble
sedimentary
Category
Sedimentary (Alluvial Deposit)
Browse sedimentary (alluvial deposit) specimens identified by the Rock Identifier community.
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Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz-rich conglomeratic sandstone
Lithic arkose/conglomerate, dominated by quartz and feldspar grains
sedimentary
Conglomerate
Clastic sedimentary rock (Polymict conglomerate with quartz/calcite matrix)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Agate (Carnelian Agate with Quartz Matrix)
Silicon Dioxide (SiO2)
mineral
Carnelian Bead
Silicon Dioxide (Chalcedony variety), SiO2
gemstone
Jasper
Silicon Dioxide (SiO2) with impurities, Microcrystalline Quartz
sedimentary
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Iron-Stained Quartz (Riverside Cobble)
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
mineral
Gold Nugget / Native Gold
Native Gold (Au)
mineral
Yellow Jasper (Chert) Pebble
Silicon Dioxide (SiO2) with Iron Oxides
sedimentary
Likely weathered river pebble
Indeterminate lithology; possibly fine-grained sandstone, siltstone, or chert
sedimentary
Polygenetic Conglomerate (or Breccia)
Clastic Sedimentary Rock
sedimentary
Tumbled milky quartz pebble
Quartz (silicon dioxide, SiO₂)
mineral
Conglomerate
Conglomerate
sedimentary
Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Ruby (Cabochon)
Corundum (Al2O3)
gemstone
Conglomerate
Pebble Conglomerate / Clastic Sedimentary Rock
sedimentary
Ruby (faceted)
Corundum (Al2O3 with chromium traces)
gemstone
Arkosic Sandstone
Arkose
sedimentary
Conglomerate
Conglomerate rock
sedimentary
Gold Nugget Jewelry
Native Gold (Au)
mineral
Chalcedony / Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Basalt with Chert or Jasper Inclusion
Igneous basalt / sedimentary chert nodule
igneous
Conglomerate (or Breccia)
Clastic Sedimentary Rock
sedimentary
Diamond
C (Carbon)
gemstone
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Diamond
C
gemstone
Polished carnelian cabochon
Carnelian, a red-orange chalcedony (microcrystalline quartz), SiO₂
gemstone
Ruby
Corundum (Al2O3:Cr)
mineral
Carnelian
Carnelian (SiO2) - Chalcedony variety
mineral
Green Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
sedimentary
Conglomerate
Polymictic Conglomerate
sedimentary
Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2 with iron oxide inclusions)
sedimentary
River Rock (River Cobbles)
Fluvial Conglomerate Clasts (primarily composed of various minerals such as Quartz, SiO2)
sedimentary
Quartz (Tumbled/Polished Pebble)
Silicon Dioxide (SiO2)
mineral