Rock Identifier

Category

Mineral (Silicate Variety)

Browse mineral (silicate variety) specimens identified by the Rock Identifier community.

Amazonite (Green Feldspar) (Microcline (variety Amazonite), Chemical Formula: K(AlSi3O8)) — mineral

Amazonite (Green Feldspar)

Microcline (variety Amazonite), Chemical Formula: K(AlSi3O8)

Carnelian (Carnelian (a variety of Chalcedony, SiO2) colored by iron oxide) — mineral

Carnelian

Carnelian (a variety of Chalcedony, SiO2) colored by iron oxide

Yellow Quartz / Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz / Quartz Pebble

Silicon Dioxide (SiO2)

Rose Quartz (Silicon dioxide with traces of titanium, iron, or manganese (SiO2)) — mineral

Rose Quartz

Silicon dioxide with traces of titanium, iron, or manganese (SiO2)

Black Tourmaline (Schorl) (NaFe3Al6(BO3)3Si6O18(OH)4) — Mineral

Black Tourmaline (Schorl)

NaFe3Al6(BO3)3Si6O18(OH)4

Sandstone (Ferruginous) (Arenite (primarily SiO2 with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Satin Spar (Gypsum variety) (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Satin Spar (Gypsum variety)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Quartz (likely Rose Quartz or Milky Quartz based on color) (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz (likely Rose Quartz or Milky Quartz based on color)

Quartz (SiO2 - Silicon Dioxide)

Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)

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

Conglomerate (Conglomerate (Detrital sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Detrital sedimentary rock)

Blue Lace Agate (Chalcedony (a form of Quartz) - SiO2) — Mineral

Blue Lace Agate

Chalcedony (a form of Quartz) - SiO2

Chert (Nodular Chert) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Nodular Chert)

Microcrystalline Silica (SiO2)

Chert (Smooth River Pebble) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Smooth River Pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (variations include Flint/Chalcedony) (Chert (SiO2 - Silicon Dioxide)) — sedimentary

Chert (variations include Flint/Chalcedony)

Chert (SiO2 - Silicon Dioxide)

Blue Quartzite (Quartzite with inclusions (SiO2)) — metamorphic

Blue Quartzite

Quartzite with inclusions (SiO2)

Sandstone (Stream-rounded Cobble) (Arenite (composed primarily of SiO2, Silica)) — sedimentary

Sandstone (Stream-rounded Cobble)

Arenite (composed primarily of SiO2, Silica)

Citrine Quartz (Citrine (Silicon Dioxide - SiO2)) — Mineral

Citrine Quartz

Citrine (Silicon Dioxide - SiO2)

Aventurine (Aventurine Quartz (SiO2 with inclusions)) — Mineral

Aventurine

Aventurine Quartz (SiO2 with inclusions)

Agate (Silicon Dioxide (SiO2)) — mineral

Agate

Silicon Dioxide (SiO2)

Sunstone (Oligoclase (Feldspar variety), (Na,Ca)(Si,Al)4O8) — mineral

Sunstone

Oligoclase (Feldspar variety), (Na,Ca)(Si,Al)4O8

Sandstone (Quartz Sandstone (predominantly)) — Sedimentary

Sandstone

Quartz Sandstone (predominantly)

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

Sandstone

Arenite (primarily composed of SiO2)

Limonitic Sandstone (Stained Sandstone) (Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining) — sedimentary

Limonitic Sandstone (Stained Sandstone)

Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining

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

Rose Quartz (SiO2 (Silicon Dioxide with trace inclusions)) — mineral

Rose Quartz

SiO2 (Silicon Dioxide with trace inclusions)

Indigo Gabbro (Gabbro (composed of plagioclase feldspar, pyroxene, and olivine)) — igneous

Indigo Gabbro

Gabbro (composed of plagioclase feldspar, pyroxene, and olivine)

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

Quartz (Flesh-colored or Rose Quartz variety)

Silicon Dioxide (SiO2)

Ferruginous Quartz (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Black Diamond / Black Sapphire (Carbon (C) or Corundum (Al2O3)) — mineral

Black Diamond / Black Sapphire

Carbon (C) or Corundum (Al2O3)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

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

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with trace impurities of Ti, Mn, or Fe) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace impurities of Ti, Mn, or Fe

Red Quartz (Carnelian/Red Jasper Agate) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Red Quartz (Carnelian/Red Jasper Agate)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Rose Quartz (Silicon dioxide (SiO2)) — mineral

Rose Quartz

Silicon dioxide (SiO2)

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

Rose Quartz

Quartz (Silicon Dioxide) - SiO2

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

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

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

Quartz (Milky/Crystal Variety)

Silicon Dioxide (SiO2)

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

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

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