Rock Identifier

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Browse none specimens identified by the Rock Identifier community.

Sandstone (Red/Brown Variety) (Arenite (SiO2 with iron oxide impurities)) — sedimentary

Sandstone (Red/Brown Variety)

Arenite (SiO2 with iron oxide impurities)

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

Rose Quartz

SiO2 (Silicon Dioxide)

mineral
Gold Flake / Placer Gold (Native Gold (Au)) — mineral

Gold Flake / Placer Gold

Native Gold (Au)

mineral
Limonite (Gozzany Iron) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Gozzany Iron)

Limonite (FeO(OH)·nH2O)

mineral
Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

sedimentary
Quartz (Amethyst variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Amethyst variety)

Silicon Dioxide (SiO2)

mineral
Chert (Jasper/Carnelian variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Carnelian variety)

Microcrystalline Quartz (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Chert (Field Stone/Pebble) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Field Stone/Pebble)

Microcrystalline or cryptocrystalline Quartz (SiO2)

sedimentary
Quartz / Quartzite (Silicon Dioxide (SiO2)) — Mineral / Metamorphic

Quartz / Quartzite

Silicon Dioxide (SiO2)

Mineral / Metamorphic
Petrified Wood (Silicified Wood (SiO2 as Quartz/Chert/Chalcedony)) — sedimentary

Petrified Wood

Silicified Wood (SiO2 as Quartz/Chert/Chalcedony)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Chert (Tan or Buffer variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Tan or Buffer variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary
Milky Quartz with Dendritic Inclusions (Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions) — mineral

Milky Quartz with Dendritic Inclusions

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

mineral
Red Jasper (Silicon Dioxide (SiO2) with Iron inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron inclusions

sedimentary
Yellow Jasper (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

mineral
Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

mineral
Jasper and Quartz River Cobble (Silicon Dioxide (SiO2) with Hematite inclusions) — Sedimentary / Metamorphic

Jasper and Quartz River Cobble

Silicon Dioxide (SiO2) with Hematite inclusions

Sedimentary / Metamorphic
Quartz / Quartzite (Silicon Dioxide (SiO2)) — Mineral / Metamorphic

Quartz / Quartzite

Silicon Dioxide (SiO2)

Mineral / Metamorphic
Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

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

Milky Quartz (Beach Pebble)

Quartz (Silicon Dioxide, SiO2)

mineral
Chert (Yellow Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

sedimentary
Amethyst (SiO2 (Silicon Dioxide) - Purple variety of Quartz) — mineral

Amethyst

SiO2 (Silicon Dioxide) - Purple variety of Quartz

mineral
Red Jasper (Silicon Dioxide (SiO2) with Iron inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron inclusions

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Smoky Quartz (Faceted Beads) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (Faceted Beads)

Silicon Dioxide (SiO2)

mineral
Gold Ore (Gold-bearing Quartz (Native Gold, Au)) — mineral

Gold Ore

Gold-bearing Quartz (Native Gold, Au)

mineral
Sandstone (likely with Quartz Veining) (Arenite (primarily SiO2)) — sedimentary

Sandstone (likely with Quartz Veining)

Arenite (primarily SiO2)

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

Rose Quartz

SiO2 (Silicon Dioxide)

mineral
Chert (Microcrystalline silica (SiO2)) — sedimentary

Chert

Microcrystalline silica (SiO2)

sedimentary
Quartzite River Stone (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Stone

Quartzite (primarily SiO2)

metamorphic
Smoky Quartz (Vein Quartz) (Quartz (Silicon Dioxide, SiO2)) — mineral

Smoky Quartz (Vein Quartz)

Quartz (Silicon Dioxide, SiO2)

mineral
Quartz (specifically Milky or Rose Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Milky or Rose Quartz)

Silicon Dioxide (SiO2)

mineral
Smoky Quartz (Silicon Dioxide (SiO2) with aluminum impurities) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

mineral
Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

sedimentary
Amethyst (Silicon Dioxide with iron impurities (SiO2)) — mineral

Amethyst

Silicon Dioxide with iron impurities (SiO2)

mineral
River Stone / Siltstone (Siltstone (composed of lithified silt)) — sedimentary

River Stone / Siltstone

Siltstone (composed of lithified silt)

sedimentary
Sandstone (Arenite (SiO2 principal component)) — sedimentary

Sandstone

Arenite (SiO2 principal component)

sedimentary
Smoky Quartz (with inclusions) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (with inclusions)

Silicon Dioxide (SiO2)

mineral
Coquina (Fossiliferous Limestone) (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Coquina (Fossiliferous Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

sedimentary
Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary
Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

sedimentary