Rock Identifier

Category

Sedimentary (Alluvial Deposit)

Browse sedimentary (alluvial deposit) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Alluvial Deposit) in the encyclopedia

Turbidite

Sapropel

Rock Gypsum

Ruby (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby

Corundum (Al2O3 with Chromium traces)

Yellow Diamond (Faceted) (Diamond (pure carbon) with nitrogen impurities, C) — mineral

Yellow Diamond (Faceted)

Diamond (pure carbon) with nitrogen impurities, C

Rough Diamond (Diamond (pure Carbon, C)) — mineral

Rough Diamond

Diamond (pure Carbon, C)

Chalcedony (Common Agate) (Silicon Dioxide (SiO₂)) — mineral

Chalcedony (Common Agate)

Silicon Dioxide (SiO₂)

Quartzite pebble with Quartz and Mica (Metamorphic Quartzite (SiO2 with accessory minerals)) — metamorphic

Quartzite pebble with Quartz and Mica

Metamorphic Quartzite (SiO2 with accessory minerals)

Ruby (Corundum (Al2O3:Cr)) — gemstone

Ruby

Corundum (Al2O3:Cr)

Corundum (Sapphire variant) (Aluminum Oxide (Al2O3)) — mineral

Corundum (Sapphire variant)

Aluminum Oxide (Al2O3)

Rough Star Sapphire (Corundum) (Al2O3 (Aluminum Oxide)) — mineral

Rough Star Sapphire (Corundum)

Al2O3 (Aluminum Oxide)

Smoky Quartz (Smoky Quartz (SiO2)) — mineral

Smoky Quartz

Smoky Quartz (SiO2)

Quartzite with Chalcedony (Metamorphosed Quartz-rich Sandstone (SiO2)) — metamorphic

Quartzite with Chalcedony

Metamorphosed Quartz-rich Sandstone (SiO2)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Quartz (Milky/Chalcedony variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Chalcedony variety)

Silicon Dioxide (SiO2)

Granite (Granite (composed of Quartz, Felspar, and Mica)) — igneous

Granite

Granite (composed of Quartz, Felspar, and Mica)

Blue Topaz (Al2SiO4(F,OH)2 (Fluorine-bearing aluminum silicate)) — mineral

Blue Topaz

Al2SiO4(F,OH)2 (Fluorine-bearing aluminum silicate)

Black Sapphire (Corundum (Al2O3 with iron and titanium impurities)) — mineral

Black Sapphire

Corundum (Al2O3 with iron and titanium impurities)

Blue Sapphire (Corundum (Al2O3 with trace Titanium and Iron)) — mineral

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Blue Sapphire (Corundum (Al2O3 - Aluminum Oxide)) — mineral

Blue Sapphire

Corundum (Al2O3 - Aluminum Oxide)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

River Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

River Quartzite Pebble

Quartzite (primarily SiO2)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate (Conglomerate) — sedimentary

Conglomerate

Conglomerate

Conglomerate with Quartz Inclusions (Conglomerate (clastic sedimentary rock) with internal Quartz (SiO2)) — sedimentary

Conglomerate with Quartz Inclusions

Conglomerate (clastic sedimentary rock) with internal Quartz (SiO2)

Agate Geode (Silicon Dioxide (SiO2)) — sedimentary

Agate Geode

Silicon Dioxide (SiO2)

Conglomerate (Sedimentary Conglomerate) — sedimentary

Conglomerate

Sedimentary Conglomerate

Weathered iron-rich rock, possibly laterite or limonite-bearing sandstone (Iron oxides/hydroxides, chiefly limonite/goethite (FeO(OH)·nH₂O), with a probable silicate or clay matrix) — sedimentary

Weathered iron-rich rock, possibly laterite or limonite-bearing sandstone

Iron oxides/hydroxides, chiefly limonite/goethite (FeO(OH)·nH₂O), with a probable silicate or clay matrix

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Yellow Jasper (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Yellow Jasper

Silicon Dioxide (SiO2) - Chalcedony variety

Jasper Pebble (Tumbled Jasper (Microcrystalline Quartz, SiO2)) — sedimentary

Jasper Pebble

Tumbled Jasper (Microcrystalline Quartz, SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Conglomerate (Clastic Sedimentary Rock (Conglomerate)) — sedimentary

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Yellow Quartzite (River Pebble) (Silicon Dioxide (SiO2) with iron oxide inclusions) — metamorphic

Yellow Quartzite (River Pebble)

Silicon Dioxide (SiO2) with iron oxide inclusions

Milky quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Sandstone (with Calcite or Silica veins) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with Calcite or Silica veins)

Clastic sedimentary rock (primarily SiO2)

Conglomerate (Conglomeratic Sandstone) — sedimentary

Conglomerate

Conglomeratic Sandstone

Red Quartz (Silicon Dioxide (SiO2) with hematite inclusions) — mineral

Red Quartz

Silicon Dioxide (SiO2) with hematite inclusions

Concrete fragment or Conglomerate (Artificial Conglomerate (Concrete) or Natural Conglomerate) — sedimentary

Concrete fragment or Conglomerate

Artificial Conglomerate (Concrete) or Natural Conglomerate

River Pebbles / Mudstone (Sedimentary Rock / Silty Claystone) — sedimentary

River Pebbles / Mudstone

Sedimentary Rock / Silty Claystone

Quartz Pebble with Epidote / Chlorite Inclusions (Silicon Dioxide (SiO2) with Epidote/Chlorite inclusions) — mineral

Quartz Pebble with Epidote / Chlorite Inclusions

Silicon Dioxide (SiO2) with Epidote/Chlorite inclusions

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Diamond (Diamond (Pure Carbon, C)) — Mineral

Diamond

Diamond (Pure Carbon, C)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)