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

Granite Pebble (Granite) — igneous

Granite Pebble

Granite

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Blue quartz-like mineral specimen (Likely quartz (SiO₂), possibly dyed or coated; exact identification requires testing) — mineral

Blue quartz-like mineral specimen

Likely quartz (SiO₂), possibly dyed or coated; exact identification requires testing

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Dendritic Agate (Silicon Dioxide with inclusions (SiO2 + Mn/Fe)) — mineral

Dendritic Agate

Silicon Dioxide with inclusions (SiO2 + Mn/Fe)

Dendritic Quartz (Silicon Dioxide (SiO2) with Manganese Oxide inclusions) — mineral

Dendritic Quartz

Silicon Dioxide (SiO2) with Manganese Oxide inclusions

Echinoid Fossil (Sea Urchin Fossil) (Echinoidea) — fossil

Echinoid Fossil (Sea Urchin Fossil)

Echinoidea

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Rutilated Quartz (Silicon Dioxide (SiO2) with inclusions of Titanium Dioxide (TiO2)) — mineral

Rutilated Quartz

Silicon Dioxide (SiO2) with inclusions of Titanium Dioxide (TiO2)

Granite (Granite (High-silica plutonic rock)) — igneous

Granite

Granite (High-silica plutonic rock)

Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass

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

Petrified Wood

Silicified Wood (primarily SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Limonite / Ironstone (FeO(OH)·nH2O) — sedimentary

Limonite / Ironstone

FeO(OH)·nH2O

Green Jasper (Silicon Dioxide (SiO2) with iron silicate inclusions) — sedimentary

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Granite Pegmatite (Phaneritic Plutonic Igneous Rock) — igneous

Granite Pegmatite

Phaneritic Plutonic Igneous Rock

Mica Schist with Pyrite (Mica Schist (FeS2 containing)) — metamorphic

Mica Schist with Pyrite

Mica Schist (FeS2 containing)

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

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Limonite (vibrant yellowish-brown iron oxide) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (vibrant yellowish-brown iron oxide)

Limonite (FeO(OH)·nH2O)

Septarian Nodule (Septarian Concretion (CaCO3 with Siderite/Limonite streaks)) — sedimentary

Septarian Nodule

Septarian Concretion (CaCO3 with Siderite/Limonite streaks)

Bauxite (Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)) — sedimentary

Bauxite

Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Moss Agate (Silicon Dioxide (SiO2) with inclusions) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions

Quartz (Smoky/Brown variety) (Silicon dioxide (SiO2)) — mineral

Quartz (Smoky/Brown variety)

Silicon dioxide (SiO2)

Orbicular Granite (Orbicular Granidiorite / Plutonic Igneous Rock) — igneous

Orbicular Granite

Orbicular Granidiorite / Plutonic Igneous Rock

Quartz Geode (Silicon Dioxide (SiO2) in a concretionary structure) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2) in a concretionary structure

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Leopard Skin Jasper (Silicon Dioxide (SiO2) with various inclusions) — sedimentary

Leopard Skin Jasper

Silicon Dioxide (SiO2) with various inclusions

Greenschist (Greenschist (Chlorite-Epidote-Actinolite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite-Epidote-Actinolite Schist)

Sandstone (Micaceous) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Micaceous)

Arenite (composed primarily of SiO2)

Graphite (Graphite (Carbon, C)) — mineral

Graphite

Graphite (Carbon, C)

Feldspar (Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)) — mineral

Feldspar

Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)

Gabbro (Basaltic Plutonic Rock (Gabbro)) — igneous

Gabbro

Basaltic Plutonic Rock (Gabbro)

Tree Agate (Dendritic Agate) (Silicon Dioxide (SiO2) with Manganese/Iron inclusions) — mineral

Tree Agate (Dendritic Agate)

Silicon Dioxide (SiO2) with Manganese/Iron inclusions

Bauxite (Bauxite (Al2O3·nH2O)) — sedimentary

Bauxite

Bauxite (Al2O3·nH2O)

Moss Agate (Silicon Dioxide (SiO2) with inclusions) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions

Rose Quartz Chips (Quartz (Silicon Dioxide - SiO2)) — mineral

Rose Quartz Chips

Quartz (Silicon Dioxide - SiO2)

Chakra Tumbled Stone Set (Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)) — Mineral

Chakra Tumbled Stone Set

Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)

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

Sandstone

Sandstone (clastic sedimentary rock, predominantly SiO2)

Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Metamorphic Rock)

Sapphirine in Magnesian Schist (Sapphirine: (Mg,Al)8(Al,Si)6O20) — metamorphic

Sapphirine in Magnesian Schist

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