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

Wollastonite (Calcium Inosilicate, CaSiO3) — mineral

Wollastonite

Calcium Inosilicate, CaSiO3

Vesicular Basalt (Basalt (Extrusive Mafic Igneous)) — igneous

Vesicular Basalt

Basalt (Extrusive Mafic Igneous)

Banded Gneiss (Gneiss (variable mineral composition)) — metamorphic

Banded Gneiss

Gneiss (variable mineral composition)

Quartz Mineral (Silicon Dioxide (SiO2)) — mineral

Quartz Mineral

Silicon Dioxide (SiO2)

Green Aventurine (Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2) — metamorphic

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2

Quartz with Iron Staining (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Arsenopyrite with Quartz (Arsenopyrite (FeAsS)) — mineral

Arsenopyrite with Quartz

Arsenopyrite (FeAsS)

Sandstone with Manganese Dendrites (Arenite (mostly SiO2) with Manganese Oxide inclusions (MnO2)) — sedimentary

Sandstone with Manganese Dendrites

Arenite (mostly SiO2) with Manganese Oxide inclusions (MnO2)

Petrified Wood (Silicified wood (Quartz replacement, SiO2)) — fossil

Petrified Wood

Silicified wood (Quartz replacement, SiO2)

Fossil Shark Tooth (Chondrichthyes (class)) — fossil

Fossil Shark Tooth

Chondrichthyes (class)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Quartz with Chlorite or Epidote inclusions (Silicon Dioxide (SiO2) with inclusions) — mineral

Quartz with Chlorite or Epidote inclusions

Silicon Dioxide (SiO2) with inclusions

Granite (Granite (Phaneritic Quartz-Feldspar Igneous Rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Igneous Rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Limonite (Iron Ore) (Hydrated ferric oxide (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrated ferric oxide (FeO(OH)·nH2O)

Apophyllite cluster (Fluorapophyllite-(K), KCa4(Si8O20)(F,OH)·8H2O) — mineral

Apophyllite cluster

Fluorapophyllite-(K), KCa4(Si8O20)(F,OH)·8H2O

Limonite (Iron Ore) (Limonite (mixture of hydrated iron(III) oxide-hydroxides)) — Mineral

Limonite (Iron Ore)

Limonite (mixture of hydrated iron(III) oxide-hydroxides)

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

Biotite Mica

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

Feldspar (specifically Orthoclase) (Potassium aluminum silicate (KAlSi3O8)) — mineral

Feldspar (specifically Orthoclase)

Potassium aluminum silicate (KAlSi3O8)

Sandstone (Banded) (Arenite) — sedimentary

Sandstone (Banded)

Arenite

Fossilized Brachiopod or Gastropod (Phylum Brachiopoda / Phylum Mollusca) — fossil

Fossilized Brachiopod or Gastropod

Phylum Brachiopoda / Phylum Mollusca

Fossilized Coral (Scleractinia (Agatized or Calcite replaced)) — fossil

Fossilized Coral

Scleractinia (Agatized or Calcite replaced)

Fluorite Tower (Calcium Fluoride (CaF2)) — mineral

Fluorite Tower

Calcium Fluoride (CaF2)

Septarian Nodule (Septarian Concretion (CaCO3 with Siderite/Calcite)) — sedimentary

Septarian Nodule

Septarian Concretion (CaCO3 with Siderite/Calcite)

Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

Dendritic Agate (Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides) — mineral

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides

Greenschist / Serpentinite Cobble (Greenschist (composed primarily of chlorite, actinolite, and epidote)) — metamorphic

Greenschist / Serpentinite Cobble

Greenschist (composed primarily of chlorite, actinolite, and epidote)

Pink Dyed Agate (Pink Agate Slice) (Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz) — mineral

Pink Dyed Agate (Pink Agate Slice)

Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz

Petrified Wood (Silicified Wood (primarily SiO2 - Silicon Dioxide)) — mineral

Petrified Wood

Silicified Wood (primarily SiO2 - Silicon Dioxide)

Granite (Granite) — igneous

Granite

Granite

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Obsidian (Obsidian (volcanic glass; primarily SiO2)) — igneous

Obsidian

Obsidian (volcanic glass; primarily SiO2)

Obsidian (Volcanic Glass (Amorphous Silica)) — igneous

Obsidian

Volcanic Glass (Amorphous Silica)

Sapphirine in Matrix (Sapphirine (Mg,Al)8(Al,Si)6O20) — mineral

Sapphirine in Matrix

Sapphirine (Mg,Al)8(Al,Si)6O20

Sandstone (likely Arkosic) (Arenite (SiO2 based)) — sedimentary

Sandstone (likely Arkosic)

Arenite (SiO2 based)

Sandstone (likely Arkose or Lithic) (Clastic sedimentary rock (SiO2 + impurities)) — sedimentary

Sandstone (likely Arkose or Lithic)

Clastic sedimentary rock (SiO2 + impurities)

Malachite (Copper Carbonate Hydroxide (Cu2CO3(OH)2)) — mineral

Malachite

Copper Carbonate Hydroxide (Cu2CO3(OH)2)

Septarian Pebble (Septarian nodule / Concretion) — sedimentary

Septarian Pebble

Septarian nodule / Concretion

Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

Greenstone (Greenschist-facies basaltic rock) — metamorphic

Greenstone

Greenschist-facies basaltic rock

Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles (Mixed gemstones (primarily Silicon Dioxide - SiO2)) — mineral

Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles

Mixed gemstones (primarily Silicon Dioxide - SiO2)