Rock Identifier

Category

Granite

Browse granite specimens identified by the Rock Identifier community.

Tourmaline (Schorl or Dravite) on Matrix (Complex Borosilicate - Na(Mg,Fe,Li,Al,Mn)3Al6(BO3)3Si6O18(OH,F)4) — mineral

Tourmaline (Schorl or Dravite) on Matrix

Complex Borosilicate - Na(Mg,Fe,Li,Al,Mn)3Al6(BO3)3Si6O18(OH,F)4

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Sandstone (Red Arkose) (Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)) — sedimentary

Sandstone (Red Arkose)

Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)

Beryl (Emerald or Aquamarine in Matrix) (Beryllium Aluminum Silicate (Be3Al2Si6O18)) — mineral

Beryl (Emerald or Aquamarine in Matrix)

Beryllium Aluminum Silicate (Be3Al2Si6O18)

Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Granitic Pegmatite with Tourmaline and Sphalerite (Pegmatite containing Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) and Sphalerite ((Zn,Fe)S)) — igneous

Granitic Pegmatite with Tourmaline and Sphalerite

Pegmatite containing Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) and Sphalerite ((Zn,Fe)S)

Garnet (Garnet Group (complex nesosilicates with general formula X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+, V3+)) — Mineral

Garnet

Garnet Group (complex nesosilicates with general formula X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+, V3+)

Smoky Quartz (Quartz (SiO₂)) — Mineral

Smoky Quartz

Quartz (SiO₂)

Amazonite in Pegmatite Matrix with Smoky Quartz (K(AlSi3O8) - Microcline (var. Amazonite) with SiO2 (Quartz)) — Mineral

Amazonite in Pegmatite Matrix with Smoky Quartz

K(AlSi3O8) - Microcline (var. Amazonite) with SiO2 (Quartz)

Amazonite (Amazonite / Microcline (KAlSi3O8)) — igneous

Amazonite

Amazonite / Microcline (KAlSi3O8)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

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

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Pegmatite with Muscovite (Granitic Pegmatite (KAl2(AlSi3O10)(OH)2)) — igneous

Pegmatite with Muscovite

Granitic Pegmatite (KAl2(AlSi3O10)(OH)2)

Aquamarine (Aquamarine (Beryl variety); Be3Al2Si6O18) — mineral

Aquamarine

Aquamarine (Beryl variety); Be3Al2Si6O18

White Quartz (Quartz (SiO2)) — Mineral

White Quartz

Quartz (SiO2)

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

Lepidolite

K(Li,Al)3(Al,Si)4O10(F,OH)2 (Lithium-bearing phyllosilicate)

Lapis Lazuli (Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite) — metamorphic

Lapis Lazuli

Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite

White Topaz (Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)) — mineral

White Topaz

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Aquamarine (Beryl (Be3Al2Si6O18 with iron impurities)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Amazonite (K(AlSi3O8), Microcline (potassium feldspar)) — mineral

Amazonite

K(AlSi3O8), Microcline (potassium feldspar)

Gneiss (Metamorphic Rock) (Gneiss) — metamorphic

Gneiss (Metamorphic Rock)

Gneiss

Quartz (Quartz (SiO₂)) — mineral

Quartz

Quartz (SiO₂)

Rough Emerald (Beryl) (Emerald (Be3Al2(SiO3)6 with Cr/V impurities)) — mineral

Rough Emerald (Beryl)

Emerald (Be3Al2(SiO3)6 with Cr/V impurities)

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

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Biotite Mica (K(Mg,Fe)3AlSi3O10(OH)2) — Mineral in a matrix (likely quartz or feldspar)

Biotite Mica

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

Mineral in a matrix (likely quartz or feldspar)

Muscovite Mica (Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2) — mineral

Muscovite Mica

Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2

Quartz (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO2 - Silicon Dioxide)

Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Banded Gneiss (River Cobble) (Gneiss (a high-grade metamorphic rock)) — metamorphic

Banded Gneiss (River Cobble)

Gneiss (a high-grade metamorphic rock)

Laterite (iron-rich nodule, possibly Bauxite as a subtype) (Laterite (composed of various minerals including goethite, hematite, gibbsite, etc.)) — Sedimentary

Laterite (iron-rich nodule, possibly Bauxite as a subtype)

Laterite (composed of various minerals including goethite, hematite, gibbsite, etc.)

Fluorite (Fluorite (CaF₂)) — mineral

Fluorite

Fluorite (CaF₂)

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

Black Tourmaline (Schorl)

NaFe3Al6(BO3)3Si6O18(OH)4

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

Lepidolite

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

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

Red Garnet

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

Crushed Stone (Gravel/Aggregates) (Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)) — sedimentary and igneous (mixed)

Crushed Stone (Gravel/Aggregates)

Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)

sedimentary and igneous (mixed)

Sunstone (Heliolite (Sodium Calcium Aluminum Silicate with Iron or Copper inclusions)) — mineral

Sunstone

Heliolite (Sodium Calcium Aluminum Silicate with Iron or Copper inclusions)

Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Fluorite

Fluorite (Calcium Fluoride, CaF2)

River Rock (Sedimentary Rock (various compositions)) — sedimentary

River Rock

Sedimentary Rock (various compositions)

Quartz (likely Clear Quartz or Rock Crystal) (Quartz (SiO2)) — Mineral

Quartz (likely Clear Quartz or Rock Crystal)

Quartz (SiO2)

Citrine (SiO2 (Silicon Dioxide)) — Mineral

Citrine

SiO2 (Silicon Dioxide)