Rock Identifier

Category

Mineral (Man Enhanced)

Browse mineral (man enhanced) specimens identified by the Rock Identifier community.

White Agate (Chalcedony) (Agate (Silicon Dioxide - SiO2)) — mineral

White Agate (Chalcedony)

Agate (Silicon Dioxide - SiO2)

Indian Agate (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Indian Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Milky Quartz (Tumbled)

Quartz (Silicon Dioxide, SiO2)

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

Quartz (Rose/Milky variety)

Silicon Dioxide (SiO2)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Agate (specifically, a slice of a Blue Lace or Chalcedony Agate nodule) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Agate (specifically, a slice of a Blue Lace or Chalcedony Agate nodule)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Agate (specifically a Blue Agate Geode Slice) (Chalcedony (cryptocrystalline variety of Quartz); SiO2) — mineral

Agate (specifically a Blue Agate Geode Slice)

Chalcedony (cryptocrystalline variety of Quartz); SiO2

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

Amethyst (Geode)

Silicon Dioxide (SiO2) with iron impurities

Quartz (Clear Quartz and Rose Quartz variants) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz and Rose Quartz variants)

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

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

Carnelian

Carnelian (Silicon Dioxide, SiO2)

Chrysoprase (Chrysoprase (a variety of Chalcedony, SiO₂)) — Mineral

Chrysoprase

Chrysoprase (a variety of Chalcedony, SiO₂)

Serpentine (Serpentinite (group of minerals: (Mg,Fe,Ni,Al)3Si2O5(OH)4)) — metamorphic

Serpentine

Serpentinite (group of minerals: (Mg,Fe,Ni,Al)3Si2O5(OH)4)

Picture Jasper (Silicon Dioxide (SiO2) with iron oxide and clay inclusions) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay inclusions

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Orbicular Jasper (Eye Jasper / Kambaba-like pattern) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Orbicular Jasper (Eye Jasper / Kambaba-like pattern)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Petrified Wood (Silicified wood (Quartz, SiO2)) — metamorphic

Petrified Wood

Silicified wood (Quartz, SiO2)

Blue Quartzite (Aventurine) (Quartzite (primarily SiO2) with inclusions of Dumortierite or Magnesio-riebeckite) — metamorphic

Blue Quartzite (Aventurine)

Quartzite (primarily SiO2) with inclusions of Dumortierite or Magnesio-riebeckite

Quartz in Matrix (possibly with Biotite or Hornblende) (Quartz (Silicon Dioxide, SiO2) in Granitic Matrix) — igneous

Quartz in Matrix (possibly with Biotite or Hornblende)

Quartz (Silicon Dioxide, SiO2) in Granitic Matrix

Chert (variations include Flint/Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variations include Flint/Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Arenite (primarily Quartz, SiO2)) — sedimentary

Sandstone

Arenite (primarily Quartz, SiO2)

Obsidian (Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)) — igneous

Obsidian

Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)

Granite (Phaneritic Plutonic Rock (High Silica content)) — igneous

Granite

Phaneritic Plutonic Rock (High Silica content)

Brecciated Chert (Brecciated Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Brecciated Chert

Brecciated Chert (Microcrystalline Quartz, SiO2)

Serpentine (Serpentinite (group of minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)) — metamorphic

Serpentine

Serpentinite (group of minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Tree Agate (Silicon Dioxide (SiO2) with Chlorite inclusions) — Mineral variant

Tree Agate

Silicon Dioxide (SiO2) with Chlorite inclusions

Mineral variant

Glass Nugget (Tumbled Glass) (Amorphous Silicon Dioxide (SiO2) with additives) — mineraloid (man-made)

Glass Nugget (Tumbled Glass)

Amorphous Silicon Dioxide (SiO2) with additives

mineraloid (man-made)

Chert (and its variety Flint) (Silicon Dioxide (SiO2) - Microcrystalline or cryptocrystalline Quartz) — sedimentary

Chert (and its variety Flint)

Silicon Dioxide (SiO2) - Microcrystalline or cryptocrystalline Quartz

Zirconia (Ceramic) & Ion-X Glass (Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass) — Synthetic Mineral / Glass

Zirconia (Ceramic) & Ion-X Glass

Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass

Synthetic Mineral / Glass

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Olivine in Basalt (Peridot) (Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) within Basalt (Rock)) — igneous

Olivine in Basalt (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) within Basalt (Rock)

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

Red Mudstone (Siltstone) (Lutite (primarily Quartz and Clay minerals with Hematite)) — sedimentary

Red Mudstone (Siltstone)

Lutite (primarily Quartz and Clay minerals with Hematite)

Synthetic Zinc/Polycarbonate Composite (Bey-specimen) (Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay) — Anthropogenic Mineral Mimic

Synthetic Zinc/Polycarbonate Composite (Bey-specimen)

Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay

Anthropogenic Mineral Mimic

Shale creek bed (Shale (fine-grained clastic sedimentary rock)) — Sedimentary

Shale creek bed

Shale (fine-grained clastic sedimentary rock)

Sandstone (Weathered Cobble) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Weathered Cobble)

Clastic Sedimentary Rock (primarily SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Obsidian (Volcanic Glass (predominantly SiO2, approximately 70% or more)) — igneous

Obsidian

Volcanic Glass (predominantly SiO2, approximately 70% or more)

Serpentinite (Serpentinite (composed primarily of minerals in the Serpentine group)) — metamorphic

Serpentinite

Serpentinite (composed primarily of minerals in the Serpentine group)

Biotite Mica (Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)) — mineral

Biotite Mica

Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)

Jade (There are two distinct minerals commonly known as Jade: Jadeite (NaAlSi2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the appearance, these spheres are likely Nephrite.) — Mineral

Jade

There are two distinct minerals commonly known as Jade: Jadeite (NaAlSi2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the appearance, these spheres are likely Nephrite.

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)