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

Jasper with Quartz Vein (Microcrystalline quartz (SiO2) with quartz infill) — sedimentary

Jasper with Quartz Vein

Microcrystalline quartz (SiO2) with quartz infill

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartzite Pebble (Quartzite (Metamorphosed Quartz Sandstone, SiO2)) — metamorphic

Quartzite Pebble

Quartzite (Metamorphosed Quartz Sandstone, SiO2)

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

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Biotite Mica Schist (Metamorphic Rock containing Biotite K(Mg,Fe)3AlSi3O10(OH)2) — metamorphic

Biotite Mica Schist

Metamorphic Rock containing Biotite K(Mg,Fe)3AlSi3O10(OH)2

Dragonstone (Brecciated Basalt/Diabase with Epidote and Quartz) (Brecciated mafic igneous rock) — igneous

Dragonstone (Brecciated Basalt/Diabase with Epidote and Quartz)

Brecciated mafic igneous rock

Red Jasper (Silicon Dioxide (SiO2), microcrystalline quartz with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2), microcrystalline quartz with iron oxide inclusions

Quartz with Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz with Matrix

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Apache Tear (Obsidian) (Volcanic Glass (Amorphous SiO2)) — igneous

Apache Tear (Obsidian)

Volcanic Glass (Amorphous SiO2)

Jasper in Quartz / Brecciated Jasper (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Jasper in Quartz / Brecciated Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Heliotrope (Bloodstone) (Chalcedony variety Quartz (SiO2) with hematite/chlorite inclusions) — mineral

Heliotrope (Bloodstone)

Chalcedony variety Quartz (SiO2) with hematite/chlorite inclusions

Agate Geode (Silicon Dioxide (Chalcedony / Quartz), SiO2) — sedimentary

Agate Geode

Silicon Dioxide (Chalcedony / Quartz), SiO2

Fossilized Ripple Marks or Stromatolite (Sedimentary ripple mark imprint / Biosedimentary structure) — fossil

Fossilized Ripple Marks or Stromatolite

Sedimentary ripple mark imprint / Biosedimentary structure

Fossilized Coral (Rugose or Tabulate) or Stromatolite (Phylum Cnidaria / Stromatolithus) — fossil

Fossilized Coral (Rugose or Tabulate) or Stromatolite

Phylum Cnidaria / Stromatolithus

Blue Quartz (Silicon Dioxide (SiO2)) — mineral

Blue Quartz

Silicon Dioxide (SiO2)

Red Jasper (Microcrystalline Quartz (SiO2) with iron oxide impurities) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2) with iron oxide impurities

Quartz Pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon dioxide (SiO2)

Geode (Silicon Dioxide (Quartz/Chalcedony) in carbonate or volcanic host rock) — sedimentary

Geode

Silicon Dioxide (Quartz/Chalcedony) in carbonate or volcanic host rock

Precious Opal (Hydrated amorphous silica, SiO2·nH2O) — gemstone

Precious Opal

Hydrated amorphous silica, SiO2·nH2O

Fossil Coral (Rugose or Tabulate Coral Fossil (CaCO3 replacement)) — fossil

Fossil Coral

Rugose or Tabulate Coral Fossil (CaCO3 replacement)

Green Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Green Jasper

Microcrystalline Quartz (Chalcedony), SiO2

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Pyrite Schist (Metamorphic rock containing FeS2 (Pyrite) with mica and quartz) — metamorphic

Pyrite Schist

Metamorphic rock containing FeS2 (Pyrite) with mica and quartz

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Silicon Dioxide (Microcrystalline Quartz / Chalcedony)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz / Chalcedony)

Blue Lace Agate (Silicon Dioxide (SiO2), variety of Chalcedony) — gemstone

Blue Lace Agate

Silicon Dioxide (SiO2), variety of Chalcedony

Blue Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Lepidolite in Quartz (K(Li,Al)3(Si,Al)4O10(F,OH)2 / SiO2) — mineral

Lepidolite in Quartz

K(Li,Al)3(Si,Al)4O10(F,OH)2 / SiO2

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

Clear Quartz Point (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Point

Silicon Dioxide (SiO2)

Rhodochrosite with Quartz (Manganese Carbonate (MnCO3) with Silicon Dioxide (SiO2)) — mineral

Rhodochrosite with Quartz

Manganese Carbonate (MnCO3) with Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Moss Agate (Chalcedony (SiO2 with inclusions)) — mineral

Moss Agate

Chalcedony (SiO2 with inclusions)

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

Amethyst

Quartz (Silicon Dioxide with iron impurities), SiO2

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

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

Jasper (Chert)

Silicon Dioxide (SiO2)