Rock Identifier

Category

Mineral Like Biological Tissue

Browse mineral like biological tissue specimens identified by the Rock Identifier community.

Learn about Mineral Like Biological Tissue in the encyclopedia

Blue Line Jasper

Lime Green Tourmaline

Lime Green Tourmaline

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Blue Schist / Lydian Stone / Chert with Glaucophane (Metamorphic rock containing quartz and glaucophane) — metamorphic

Blue Schist / Lydian Stone / Chert with Glaucophane

Metamorphic rock containing quartz and glaucophane

Mica Schist with Biotite or Muscovite (Metamorphic rock rich in sheet silicates) — metamorphic

Mica Schist with Biotite or Muscovite

Metamorphic rock rich in sheet silicates

Pegmatite (Igneous Pegmatite) — igneous

Pegmatite

Igneous Pegmatite

Sandstone Concretion with Quartz Center (Sedimentary Clastic Rock (SiO2 matrix with Quartz core)) — sedimentary

Sandstone Concretion with Quartz Center

Sedimentary Clastic Rock (SiO2 matrix with Quartz core)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Granodiorite (Granodiorite (Intermediate intrusive igneous rock)) — igneous

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Limonite (Iron Ore) (Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Conglomerate (Clastic Sedimentary Conglomerate (SiO2, CaCO3 dominant)) — sedimentary

Conglomerate

Clastic Sedimentary Conglomerate (SiO2, CaCO3 dominant)

Muscovite Mica (Muscovite [KAl2(AlSi3O10)(OH)2]) — mineral

Muscovite Mica

Muscovite [KAl2(AlSi3O10)(OH)2]

Nickel coin (U.S. currency) (Cupronickel (75% Copper, 25% Nickel alloy)) — man-made alloy (metallic)

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

man-made alloy (metallic)

Blue Quartzite (Aventurine) (Silicon Dioxide (SiO2) with Dumortierite or Crocidolite inclusions) — metamorphic

Blue Quartzite (Aventurine)

Silicon Dioxide (SiO2) with Dumortierite or Crocidolite inclusions

Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

Granite River Pebble (Granite) — igneous

Granite River Pebble

Granite

Greenschist (Greenstone) (Chlorite Schist / Greenschist Facies Rock) — metamorphic

Greenschist (Greenstone)

Chlorite Schist / Greenschist Facies Rock

Sandstone Pebble (Arenite (SiO2 based)) — sedimentary

Sandstone Pebble

Arenite (SiO2 based)

Granite (Phaneritic intrusive igneous rock (Quartz, Feldspar, Mica)) — igneous

Granite

Phaneritic intrusive igneous rock (Quartz, Feldspar, Mica)

Mica Schist (Muscovite/Biotite Schist) — metamorphic

Mica Schist

Muscovite/Biotite Schist

Schist (Schist (containing Quartz, Mica, and Amphibole)) — metamorphic

Schist

Schist (containing Quartz, Mica, and Amphibole)

Granite (Phaneritic intrusive igneous rock (mostly Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic intrusive igneous rock (mostly Quartz, Feldspar, and Mica)

Rounded gray limestone pebble with a calcite vein (Calcitic limestone, composed predominantly of calcite (CaCO₃), locally cut by a white calcite vein) — sedimentary

Rounded gray limestone pebble with a calcite vein

Calcitic limestone, composed predominantly of calcite (CaCO₃), locally cut by a white calcite vein

Gneissic Schist (Foliated Metamorphic Rock (Schist/Gneiss transition)) — metamorphic

Gneissic Schist

Foliated Metamorphic Rock (Schist/Gneiss transition)

Sandstone (Arenicola (comprising mostly Quartz, SiO2)) — sedimentary

Sandstone

Arenicola (comprising mostly Quartz, SiO2)

Agate (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

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

Lepidolite

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

Gold Ore (Native Gold (Au) in Quartz or Silicate matrix) — mineral

Gold Ore

Native Gold (Au) in Quartz or Silicate matrix

Granite (Granite (composed mainly of Quartz, Potassium Feldspar, Plagioclase, and Biotite/Mica)) — igneous

Granite

Granite (composed mainly of Quartz, Potassium Feldspar, Plagioclase, and Biotite/Mica)

Granite Glacial Cobble (Granite) — igneous

Granite Glacial Cobble

Granite

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Limonite / Goethite (Ironstone Nodule) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite / Goethite (Ironstone Nodule)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

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

Rose Quartz

Quartz (Silicon Dioxide, SiO2)

Fuchsite (Chromian Muscovite, K(Al,Cr)2(AlSi3O10)(OH)2) — mineral

Fuchsite

Chromian Muscovite, K(Al,Cr)2(AlSi3O10)(OH)2

Green Aventurine (Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine

Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

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

Quartz (Citrine/Milky variety)

Silicon Dioxide (SiO2)

Sandstone (Sandstone (clastic sedimentary rock, predominantly SiO2)) — sedimentary

Sandstone

Sandstone (clastic sedimentary rock, predominantly SiO2)

Conglomerate (Sedimentary Conglomerate) — sedimentary

Conglomerate

Sedimentary Conglomerate

Conglomerate (Clastic sedimentary rock (Polymict conglomerate with quartz/calcite matrix)) — sedimentary

Conglomerate

Clastic sedimentary rock (Polymict conglomerate with quartz/calcite matrix)

Black Obsidian (Obsidian (Volcanic Glass, SiO2+)) — igneous

Black Obsidian

Obsidian (Volcanic Glass, SiO2+)

Moss Agate (Crescent Moon Shape) (Silicon Dioxide (SiO2) with iron/manganese inclusions) — mineral

Moss Agate (Crescent Moon Shape)

Silicon Dioxide (SiO2) with iron/manganese inclusions

Petrified Wood (Silicified Wood (primarily SiO2)) — mineral

Petrified Wood

Silicified Wood (primarily SiO2)