Rock Identifier

Category

Mineral Group

Browse mineral group specimens identified by the Rock Identifier community.

Learn about Mineral Group in the encyclopedia

Garnierite

Feldspar

Buergerite

Glauconite

Olenite

Hutcheonite

Eltyubyuite

Euxenite

Banalsite

Knorringite

Plazolite

Katoite

Almandine Garnet in Matrix (Almandine, Fe3Al2(SiO4)3) — metamorphic

Almandine Garnet in Matrix

Almandine, Fe3Al2(SiO4)3

Vanadinite (Pb5(VO4)3Cl) — mineral

Vanadinite

Pb5(VO4)3Cl

Vanadinite (Vanadinite (Pb5(VO4)3Cl)) — mineral

Vanadinite

Vanadinite (Pb5(VO4)3Cl)

Porphyritic Basalt (Basalt (Extrusive Igneous Rock)) — igneous

Porphyritic Basalt

Basalt (Extrusive Igneous Rock)

Mica (Muscovite / Biotite (Phyllosilicate group)) — mineral

Mica

Muscovite / Biotite (Phyllosilicate group)

Epidote (Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — mineral

Epidote

Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

Moonstone (Green Moonstone / Garnierite) (Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Garnierite) — mineral

Moonstone (Green Moonstone / Garnierite)

Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Garnierite

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

Garnet (Almandine-Pyrope) (Almandine-Pyrope Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3) — mineral

Garnet (Almandine-Pyrope)

Almandine-Pyrope Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3

Vanadinite on Barite (Pb5(VO4)3Cl (Vanadinite) with BaSO4 (Barite)) — mineral

Vanadinite on Barite

Pb5(VO4)3Cl (Vanadinite) with BaSO4 (Barite)

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

Biotite (Mica)

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

Chalcedony (Agate and Carnelian varieties) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate and Carnelian varieties)

Silicon Dioxide (SiO2)

Biotite Schist (Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]) — metamorphic

Biotite Schist

Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]

Quartz Mix and Feldspar Group (Silicon Dioxide (SiO2) and Potassium Alumino-silicates (KAlSi3O8)) — mineral

Quartz Mix and Feldspar Group

Silicon Dioxide (SiO2) and Potassium Alumino-silicates (KAlSi3O8)

Sunstone Beads (Feldspar group (Oligoclase / Labradorite)) — gemstone

Sunstone Beads

Feldspar group (Oligoclase / Labradorite)

Raw Garnet Fragment (Nesosilicate Group (e.g., Almandine, Fe3Al2(SiO4)3)) — mineral

Raw Garnet Fragment

Nesosilicate Group (e.g., Almandine, Fe3Al2(SiO4)3)

Black Tourmaline (Schorl) (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline (Schorl)

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Biotite on Quartz (Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2) and Quartz (SiO2)) — mineral

Biotite on Quartz

Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2) and Quartz (SiO2)

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Chromite (Chromite (FeCr2O4)) — mineral

Chromite

Chromite (FeCr2O4)

Almandine Garnet in Schist Matrix (Almandine - Fe3Al2(SiO4)3) — metamorphic

Almandine Garnet in Schist Matrix

Almandine - Fe3Al2(SiO4)3

Almandine Garnet in Matrix (Almandine (Fe3Al2(SiO4)3)) — metamorphic

Almandine Garnet in Matrix

Almandine (Fe3Al2(SiO4)3)

Glauconitic Sandstone (Greensand) (Glauconitic Quartz Arenite (containing Glauconite, (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)) — sedimentary

Glauconitic Sandstone (Greensand)

Glauconitic Quartz Arenite (containing Glauconite, (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)

Tumbled green-and-white stone, likely serpentine (Serpentinite; mainly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with possible magnesite or talc) — metamorphic

Tumbled green-and-white stone, likely serpentine

Serpentinite; mainly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with possible magnesite or talc

Almandine Garnet (Fe3Al2(SiO4)3) — mineral

Almandine Garnet

Fe3Al2(SiO4)3

Black Tourmaline (Schorl) (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline (Schorl)

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Almandine Garnet (weathered) (Almandine (Fe3Al2(SiO4)3)) — mineral

Almandine Garnet (weathered)

Almandine (Fe3Al2(SiO4)3)

Almandine Garnet (Almandine, Fe3Al2(SiO4)3) — mineral

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Almandine Garnet (Almandine (Fe3Al2(SiO4)3)) — mineral

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Feldspar (Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)) — mineral

Feldspar

Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)

Garnet (Almandine (Fe3Al2(SiO4)3)) — mineral

Garnet

Almandine (Fe3Al2(SiO4)3)

Amethyst Geode (Amethyst (Silicon Dioxide, SiO2)) — mineral

Amethyst Geode

Amethyst (Silicon Dioxide, SiO2)

Tourmaline crystal (Tourmaline Group (Complex Borosilicate)) — mineral

Tourmaline crystal

Tourmaline Group (Complex Borosilicate)

Potassium Feldspar (Orthoclase) (Orthoclase (KAlSi3O8)) — mineral

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Garnet (likely Almandine or Pyrope) (Garnet Group (Fe3Al2Si3O12 or Mg3Al2Si3O12)) — mineral

Garnet (likely Almandine or Pyrope)

Garnet Group (Fe3Al2Si3O12 or Mg3Al2Si3O12)

Basalt with Large Augite Phenocrysts (Porphyritic Basalt (containing Ca(Mg,Fe,Al)(Al,Si)2O6)) — igneous

Basalt with Large Augite Phenocrysts

Porphyritic Basalt (containing Ca(Mg,Fe,Al)(Al,Si)2O6)

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

Lepidolite with Quartz

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

Garnet-bearing Schist (Almandine Garnet [Fe3Al2(SiO4)3] in Micaceous Schist) — metamorphic

Garnet-bearing Schist

Almandine Garnet [Fe3Al2(SiO4)3] in Micaceous Schist

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

Lepidolite

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

Feldspar (Orthoclase) (Potassium Feldspar (KAlSi3O8)) — mineral

Feldspar (Orthoclase)

Potassium Feldspar (KAlSi3O8)

Biotite on Quartz Matrix (Biotite - K(Mg,Fe)3(AlSi3O10)(OH,F)2 with Quartz (SiO2)) — mineral

Biotite on Quartz Matrix

Biotite - K(Mg,Fe)3(AlSi3O10)(OH,F)2 with Quartz (SiO2)