Rock Identifier

Category

Mineral (Biogenic)

Browse mineral (biogenic) specimens identified by the Rock Identifier community.

Learn about Mineral (Biogenic) in the encyclopedia

Glauconite

Glauconite

Halite

Halite

Hutcheonite

Hutcheonite

Sperrylite

Sperrylite

Baddeleyite

Baddeleyite

Anatase

Anatase

Brookite

Brookite

Talc

Talc

Euxenite

Euxenite

Eltyubyuite

Eltyubyuite

Dolomite

Dolomite

Buergerite

Buergerite

Pebble (Clast (specifically a granule or small pebble)) — Sedimentary

Pebble

Clast (specifically a granule or small pebble)

Milky Quartz with Mineral Inclusions (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz with Mineral Inclusions

Quartz (Silicon Dioxide - SiO2)

Flesh-colored Quartz Mineral (SiO2 (Silicon Dioxide) with Iron Impurities) — mineral

Flesh-colored Quartz Mineral

SiO2 (Silicon Dioxide) with Iron Impurities

Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Calcite

Calcite (Calcium Carbonate, CaCO3)

Gneiss (High-grade regional metamorphic rock (Foliated)) — metamorphic

Gneiss

High-grade regional metamorphic rock (Foliated)

Garden Quartz (Lodalite) (Silicon Dioxide (SiO2) with mineral inclusions) — mineral

Garden Quartz (Lodalite)

Silicon Dioxide (SiO2) with mineral inclusions

Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2) — Mineral

Fuchsite

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

Satin Spar (often marketed as Selenite) (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — mineral

Satin Spar (often marketed as Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Black Spinel (Magnesium Aluminum Oxide (MgAl2O4)) — mineral

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Sandstone (Quartz-rich) (Arenite) — sedimentary

Sandstone (Quartz-rich)

Arenite

Granodiorite (Granodiorite) — Igneous

Granodiorite

Granodiorite

Turquoise (CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Iron Ore (Magnetite-Hematite) (Magnetite (Fe3O4) and Hematite (Fe2O3)) — mineral

Iron Ore (Magnetite-Hematite)

Magnetite (Fe3O4) and Hematite (Fe2O3)

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

Quartz in Matrix

Silicon Dioxide (SiO2)

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)

Orange Calcite (likely polished specimen) (Calcite) — Mineral

Orange Calcite (likely polished specimen)

Calcite

Milky Quartz with Mineral Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

Milky Quartz with Mineral Inclusions (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz with Mineral Inclusions

Quartz (Silicon Dioxide, SiO2)

General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite) (Anhydrite (Calcium Sulfate, CaSO4)) — Mineral

General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)

Anhydrite (Calcium Sulfate, CaSO4)

Silver (Native Silver Mineral) (Ag (Native Silver), Alloyed 90% Ag / 10% Cu) — mineral

Silver (Native Silver Mineral)

Ag (Native Silver), Alloyed 90% Ag / 10% Cu

Milky Quartz with Mineral Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

Azurite-Malachite with Limonite (Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)) — mineral

Azurite-Malachite with Limonite

Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)

Granite (Granite) — Igneous

Granite

Granite

Quartz Pebbles (Silicon Dioxide (SiO2)) — mineral

Quartz Pebbles

Silicon Dioxide (SiO2)

Quartz (Druzy) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy)

Silicon Dioxide (SiO2)

Chakra Stone (Composite / Man-made Bonded Gemstones) (Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)) — Combined Minerals / Metaphysical stones

Chakra Stone (Composite / Man-made Bonded Gemstones)

Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)

Combined Minerals / Metaphysical stones

Quartz in Matrix (possibly Basalt or Siltstone host) (Silicon Dioxide (SiO2) in Host Rock) — mineral

Quartz in Matrix (possibly Basalt or Siltstone host)

Silicon Dioxide (SiO2) in Host Rock

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic volcanic rock)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Blue Apatite (Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]) — mineral

Blue Apatite

Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]

Granite or Pegmatite with Mica (Granitoid) — igneous

Granite or Pegmatite with Mica

Granitoid

Olivine (Peridot) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — Mineral

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Massive Quartz (Silicon dioxide (SiO2)) — mineral

Massive Quartz

Silicon dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (Iron-stained) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Iron-stained)

Arenite (primarily SiO2 with Fe2O3 staining)

Sandstone (Banded) (Clastic Sedimentary Rock: Arenite) — sedimentary

Sandstone (Banded)

Clastic Sedimentary Rock: Arenite

Quartz (Chatoyant or Milky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chatoyant or Milky variety)

Silicon Dioxide (SiO2)

Satin Spar (Gypsum) (Hydrous calcium sulfate (CaSO4·2H2O)) — mineral

Satin Spar (Gypsum)

Hydrous calcium sulfate (CaSO4·2H2O)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Native Copper (Native Copper (Cu)) — mineral

Native Copper

Native Copper (Cu)