Rock Identifier

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Browse none specimens identified by the Rock Identifier community.

Carnelian (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

mineral
Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

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

Chert (often called Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Aventurine Quartz (Silicon Dioxide (SiO2) with inclusions of Fuchsite mica) — mineral

Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

mineral
Jasper (Silicon Dioxide (SiO₂)) — sedimentary

Jasper

Silicon Dioxide (SiO₂)

sedimentary
Druzy Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Druzy Quartz

Quartz (Silicon Dioxide, SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

igneous
Flower Agate (Plume Agate) (Chalcedony (Silicon Dioxide) with Spherulitic Inclusions - SiO2) — mineral

Flower Agate (Plume Agate)

Chalcedony (Silicon Dioxide) with Spherulitic Inclusions - SiO2

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

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

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

Citrine

Citrine (Silicon Dioxide - SiO2)

mineral
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

mineraloid
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

mineral
Carnelian (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

mineral
Quartz (Milky and Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky and Smoky variety)

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Dalmatian Stone (Dalmatian Jasper (Aplitic Perthite)) — igneous

Dalmatian Stone

Dalmatian Jasper (Aplitic Perthite)

igneous
Quartz (Milky/Clear Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

mineral
Chert Pebble / Brachiopod Fossil Internal Mold (Silicon Dioxide (SiO2) / Fossil: Brachiopoda (generic internal mold)) — sedimentary

Chert Pebble / Brachiopod Fossil Internal Mold

Silicon Dioxide (SiO2) / Fossil: Brachiopoda (generic internal mold)

sedimentary
Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

sedimentary
Carnelian (Carnelian (SiO2 - Silicon Dioxide)) — mineral

Carnelian

Carnelian (SiO2 - Silicon Dioxide)

mineral
Chert (variant Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (variant Flint)

Silicon Dioxide (SiO2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Aventurine (Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2) — metamorphic

Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

metamorphic
Asphalt (Bituminous pavement) (Bituminous concrete / Asphalt) — Sedimentary (Anthropogenic)

Asphalt (Bituminous pavement)

Bituminous concrete / Asphalt

Sedimentary (Anthropogenic)
Sandstone Concretion (Clastic sedimentary rock (primarily Silica, SiO2, or Calcium Carbonate, CaCO3)) — sedimentary

Sandstone Concretion

Clastic sedimentary rock (primarily Silica, SiO2, or Calcium Carbonate, CaCO3)

sedimentary
Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)

sedimentary
Pearl (Aragonite (CaCO3) with Conchiolin) — mineral

Pearl

Aragonite (CaCO3) with Conchiolin

mineral
Quartz (Milky/Common Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common Quartz)

Silicon Dioxide (SiO2)

mineral
Green Quartz (Prasiolite/Adventurine/Jasper) (Silicon Dioxide (SiO2)) — mineral

Green Quartz (Prasiolite/Adventurine/Jasper)

Silicon Dioxide (SiO2)

mineral
Amethyst (specifically Chevron Amethyst or Dream Amethyst) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (specifically Chevron Amethyst or Dream Amethyst)

Silicon Dioxide (SiO2) with iron impurities

mineral
Amethyst (Chevron or Banded Amethyst) (Silicon Dioxide (SiO2) with trace Iron (Fe)) — mineral

Amethyst (Chevron or Banded Amethyst)

Silicon Dioxide (SiO2) with trace Iron (Fe)

mineral
Quartz (Milky or White Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

mineral
Sandstone (Clastic Sedimentary Rock (composed of SiO2 grains)) — sedimentary

Sandstone

Clastic Sedimentary Rock (composed of SiO2 grains)

sedimentary
Quartz (Smoky/Milky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

mineral
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Orange Quartzite (Quartzite (primarily SiO2 with Hematite impurities)) — metamorphic

Orange Quartzite

Quartzite (primarily SiO2 with Hematite impurities)

metamorphic