Rock Identifier

Category

Organic Material (Likely A Fruit Or Berry)

Browse organic material (likely a fruit or berry) specimens identified by the Rock Identifier community.

Quartz (Quartz (SiO₂ - Silicon Dioxide)) — mineral

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Pumice (likely) (Pumice (extrusive igneous rock)) — Igneous

Pumice (likely)

Pumice (extrusive igneous rock)

Quartz (Clear Quartz/Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

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

Agate

Chalcedony (Silicon Dioxide, SiO2)

Angelite (Anhydrite (Calcium Sulfate, CaSO4)) — mineral

Angelite

Anhydrite (Calcium Sulfate, CaSO4)

Quartz-veined Mudstone or Argillite (SiO2 (Quartz) in Siltstone/Mudstone matrix) — sedimentary

Quartz-veined Mudstone or Argillite

SiO2 (Quartz) in Siltstone/Mudstone matrix

Azurite with Malachite and Limonite (Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2) — mineral

Azurite with Malachite and Limonite

Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2

Agate (Carnelian-like) (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Agate (Carnelian-like)

Chalcedony (Silicon Dioxide, SiO2)

Pumice (Vesicular volcanic glass) — igneous

Pumice

Vesicular volcanic glass

Granodiorite Pebble (Granodiorite) — igneous

Granodiorite Pebble

Granodiorite

Black Chert (Chert (microcrystalline quartz)) — Mineral

Black Chert

Chert (microcrystalline quartz)

Jasper (with Agate/Chalcedony inclusions) (Silicon Dioxide (SiO2)) — sedimentary

Jasper (with Agate/Chalcedony inclusions)

Silicon Dioxide (SiO2)

Pink Granite (Phaneritic Felsic Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock

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

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2 with iron oxide inclusions)

Sandstone (Quartzose) (Sandstone (clastic sedimentary rock, primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Sandstone (clastic sedimentary rock, primarily SiO2)

Quartz (Flesh-colored or Rose Quartz variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Flesh-colored or Rose Quartz variety)

Silicon Dioxide (SiO2)

Milky Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Granite (Granite (High-silica plutonic rock)) — Igneous

Granite

Granite (High-silica plutonic rock)

Basalt with inclusion (Basalt (Aphanitic-Porphyritic texture)) — igneous

Basalt with inclusion

Basalt (Aphanitic-Porphyritic texture)

Yellow Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Yellow Quartzite Pebble

Quartzite (SiO2)

Chalcedony (Agate/Carnelian type) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Carnelian type)

Silicon Dioxide (SiO2)

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Bull Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Bull Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz with Inclusions (Silicon Dioxide (SiO2) with various mineral inclusions) — mineral

Quartz with Inclusions

Silicon Dioxide (SiO2) with various mineral inclusions

Quartz (Vein Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Quartz (Smoky/Milky Variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Milky Variety)

Silicon Dioxide (SiO2)

White Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

White Quartz Pebble

Silicon Dioxide (SiO2)

Bull Quartz (Milky Quartz) (Quartz (Silicon Dioxide - SiO2)) — mineral

Bull Quartz (Milky Quartz)

Quartz (Silicon Dioxide - SiO2)

Chert (often called Flint or River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or River Pebble)

Microcrystalline Quartz (SiO2)

Quartz (Orangey-white variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Orangey-white variety)

Silicon Dioxide (SiO2)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Gastropod Fossil (Snail Steinkern) (Class Gastropoda fossil, composed of Calcium Carbonate (CaCO3)) — sedimentary

Gastropod Fossil (Snail Steinkern)

Class Gastropoda fossil, composed of Calcium Carbonate (CaCO3)

Banded Quartzite River Pebble (Metamorphosed Quartz-rich Sandstone (SiO2)) — metamorphic

Banded Quartzite River Pebble

Metamorphosed Quartz-rich Sandstone (SiO2)

Amazonite (Potassium aluminum silicate (KAlSi3O8)) — mineral

Amazonite

Potassium aluminum silicate (KAlSi3O8)

Paper (Cellulose) (Cellulose (C6H10O5)n) — Organic (Anthropogenic)

Paper (Cellulose)

Cellulose (C6H10O5)n

Organic (Anthropogenic)

Pearl (Calcium Carbonate (CaCO3) - Aragonite/Calcite) — mineral

Pearl

Calcium Carbonate (CaCO3) - Aragonite/Calcite

Pearl (Calcium carbonate (CaCO3) in the form of Aragonite or Calcite) — mineral

Pearl

Calcium carbonate (CaCO3) in the form of Aragonite or Calcite

Note: Item is not a geological specimen (Guitar Components (Steel, Nickel, Plastic, Wood)) — Synthetic/Consumer Product

Note: Item is not a geological specimen

Guitar Components (Steel, Nickel, Plastic, Wood)

Synthetic/Consumer Product

Quartz (Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained)

Silicon Dioxide (SiO2)

Plagioclase Feldspar (NaAlSi3O8 – CaAlSi2O8 (Sodium-Calcium Aluminum Silicates)) — mineral

Plagioclase Feldspar

NaAlSi3O8 – CaAlSi2O8 (Sodium-Calcium Aluminum Silicates)

Gold in Quartz Matrix (Native Gold (Au) with Quartz (SiO2) and Slate/Shale) — mineral

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2) and Slate/Shale

Jade (likely Jadeite) (Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)) — Mineral

Jade (likely Jadeite)

Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)