Rock Identifier

Category

Mineralogical Specimen

Browse mineralogical specimen specimens identified by the Rock Identifier community.

Learn about Mineralogical Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Morganite Crystal

Morganite Crystal

Aquamarine Matrix

Aquamarine Matrix

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

White Beryl

Smoky Quartz

Clear Obsidian

Goshenite Crystal

Goshenite Crystal

Magnetite

Crocoite

Carnelian Agate (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide inclusions

Biotite Schist (Schist (Biotite-dominated)) — metamorphic

Biotite Schist

Schist (Biotite-dominated)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Rough Diamond (Natural Diamond (Carbon, C)) — mineral

Rough Diamond

Natural Diamond (Carbon, C)

Banded Rhyolite (Wonderstone) (Rhyolite (High-silica volcanic rock)) — igneous

Banded Rhyolite (Wonderstone)

Rhyolite (High-silica volcanic rock)

Amazonite (Microcline (KAlSi3O8) with trace lead/water inclusions) — mineral

Amazonite

Microcline (KAlSi3O8) with trace lead/water inclusions

Banded Agate (Lake Superior Agate) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Banded Agate (Lake Superior Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Fossiliferous Limestone (Calcium Carbonate (CaCO3) with marine fossils) — fossil

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with marine fossils

Quartzite Pebble (River Pebble) (Quartzite (SiO2)) — metamorphic

Quartzite Pebble (River Pebble)

Quartzite (SiO2)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Chert Conglomerate (Potomac Puddle Stone) (Sedimentary Conglomerate with Iron-Oxide matrix) — sedimentary

Chert Conglomerate (Potomac Puddle Stone)

Sedimentary Conglomerate with Iron-Oxide matrix

Tiger's Eye (Raw) (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Tiger's Eye (Raw)

Pseudomorph of Quartz after Crocidolite (SiO2)

Citrine Quartz carving (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz carving

Silicon Dioxide (SiO2)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Jasper with Chalcedony (Silicon Dioxide (SiO2)) — sedimentary

Jasper with Chalcedony

Silicon Dioxide (SiO2)

Amethyst Geode (Amethyst (Silicon Dioxide, SiO2)) — mineral

Amethyst Geode

Amethyst (Silicon Dioxide, SiO2)

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

Citrine

Citrine (Silicon Dioxide, SiO2)

Goethite (Goethite (FeO(OH))) — mineral

Goethite

Goethite (FeO(OH))

Foliated Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Foliated Gneiss

Gneiss (Metamorphic Rock)

Amethyst (Quartz (Silicon Dioxide with iron impurities), SiO2) — mineral

Amethyst

Quartz (Silicon Dioxide with iron impurities), SiO2

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Chert (Jasper/Agate variety)

Silicon Dioxide (SiO2)

Amazonite (K(AlSi3O8) - Potassium Aluminum Silicate (variety of Microcline)) — mineral

Amazonite

K(AlSi3O8) - Potassium Aluminum Silicate (variety of Microcline)

Yooperlite (Fluorescent Sodalite-bearing Syenite) (Sodalite-bearing Syenite) — igneous

Yooperlite (Fluorescent Sodalite-bearing Syenite)

Sodalite-bearing Syenite

Bivalve Fossil (Clam) (Class Bivalvia, likely Mercenaria or similar genus) — fossil

Bivalve Fossil (Clam)

Class Bivalvia, likely Mercenaria or similar genus

Septarian Nodule (Septaria (composed of Calcite, Aragonite, and Limestone)) — sedimentary

Septarian Nodule

Septaria (composed of Calcite, Aragonite, and Limestone)

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Hydrated Copper Phyllosilicate)) — mineral

Chrysocolla

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Hydrated Copper Phyllosilicate)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Dyed Dragon Vein Agate (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Chrysocolla (Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Ruby in Zoisite (Anyolite (composite of Corundum and Zoisite)) — metamorphic

Ruby in Zoisite

Anyolite (composite of Corundum and Zoisite)

Amazonite (Amazonite (KAlSi3O8)) — mineral

Amazonite

Amazonite (KAlSi3O8)

Snowflake Obsidian (Volcanic glass containing Spherulitic inclusions (SiO2 + impurities)) — igneous

Snowflake Obsidian

Volcanic glass containing Spherulitic inclusions (SiO2 + impurities)

Amazonite (Microcline-type Feldspar (KAlSi3O8)) — mineral

Amazonite

Microcline-type Feldspar (KAlSi3O8)

Chrysocolla (in Host Rock) (Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) — mineral

Chrysocolla (in Host Rock)

Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Fire Agate (Silicon Dioxide (SiO2) with Goethite or Limonite inclusions) — mineral

Fire Agate

Silicon Dioxide (SiO2) with Goethite or Limonite inclusions

Citrine Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Tiger's Eye (Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2) — metamorphic

Tiger's Eye

Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2