Rock Identifier

Category

Mineral Composite

Browse mineral composite specimens identified by the Rock Identifier community.

Citrine (likely Heat-Treated Amethyst) (Silicon Dioxide (SiO2)) — mineral

Citrine (likely Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Amethyst (Amethyst (Silicon Dioxide - SiO2 with iron impurities)) — mineral

Amethyst

Amethyst (Silicon Dioxide - SiO2 with iron impurities)

Granite (Granite (Felsic intrusive igneous rock)) — igneous

Granite

Granite (Felsic intrusive igneous rock)

Charoite (Charoite (Hydrated potassium, sodium, calcium, barium, strontium silicate hydroxide fluoride)) — metamorphic

Charoite

Charoite (Hydrated potassium, sodium, calcium, barium, strontium silicate hydroxide fluoride)

River Stone (Granitic Gneiss) (Foliated Granitic Gneiss) — metamorphic

River Stone (Granitic Gneiss)

Foliated Granitic Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Copper-bearing Quartz (likely Malachite on Quartz matrix) (Cu2CO3(OH)2 (Malachite) on SiO2 (Quartz)) — mineral

Copper-bearing Quartz (likely Malachite on Quartz matrix)

Cu2CO3(OH)2 (Malachite) on SiO2 (Quartz)

Greenstone (Metabasalt / Greenschist facies rock) — metamorphic

Greenstone

Metabasalt / Greenschist facies rock

Granite Pebble (Granite (Phaneritic intrusive igneous rock)) — igneous

Granite Pebble

Granite (Phaneritic intrusive igneous rock)

Granite (Pink/Red) (Phaneritic Plutonic Felsic Rock (major minerals: Quartz, Orthoclase Feldspar, Plagioclase Feldspar)) — igneous

Granite (Pink/Red)

Phaneritic Plutonic Felsic Rock (major minerals: Quartz, Orthoclase Feldspar, Plagioclase Feldspar)

Gneiss (Granitic Gneiss) (Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)) — metamorphic

Gneiss (Granitic Gneiss)

Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)

Granite (Plutonic felsic rock (Quartz, Feldspar, Mica)) — igneous

Granite

Plutonic felsic rock (Quartz, Feldspar, Mica)

Quartz Pebble (with probable inclusions or staining) (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz Pebble (with probable inclusions or staining)

Quartz (Silicon Dioxide - SiO2)

Granite (with Orthoclase and Quartz) (Phaneritic Felsic Igneous Rock (KAlSi3O8 + SiO2)) — igneous

Granite (with Orthoclase and Quartz)

Phaneritic Felsic Igneous Rock (KAlSi3O8 + SiO2)

Diorite (River Rock) (Intermediate plutonic igneous rock) — igneous

Diorite (River Rock)

Intermediate plutonic igneous rock

Sandstone (Greywacke) (Arenite / Clastic Sedimentary Rock) — sedimentary

Sandstone (Greywacke)

Arenite / Clastic Sedimentary Rock

Granite featuring Quartz Vein (Granite with hydrothermal silica (SiO2) intrusion) — igneous

Granite featuring Quartz Vein

Granite with hydrothermal silica (SiO2) intrusion

Diamond (Macled/Crystal fragment) (Carbon (C), isometric crystal system) — mineral

Diamond (Macled/Crystal fragment)

Carbon (C), isometric crystal system

Corundum (Corundum (Aluminium oxide, Al2O3)) — mineral

Corundum

Corundum (Aluminium oxide, Al2O3)

Milky Quartz with Pyrite inclusions (Silicon Dioxide (SiO2) with Iron Disulfide (FeS2)) — mineral

Milky Quartz with Pyrite inclusions

Silicon Dioxide (SiO2) with Iron Disulfide (FeS2)

Greenstone (Greenschist) (Greenschist (composed of Chlorite, Epidote, and Actinolite)) — metamorphic

Greenstone (Greenschist)

Greenschist (composed of Chlorite, Epidote, and Actinolite)

Sandstone (Ferruginous) (Arenite with Iron Oxide cement (SiO2 + Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (SiO2 + Fe2O3)

Serpentinite (Serpentinite (composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite)) — metamorphic

Serpentinite

Serpentinite (composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite)

Basalt (Aphanitic mafic volcanic rock (primarily plagioclase feldspar and pyroxene)) — igneous

Basalt

Aphanitic mafic volcanic rock (primarily plagioclase feldspar and pyroxene)

Beaded Jewelry (Assorted Gemstones) (Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ) — Mineral, Jewelry

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Mineral, Jewelry

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Arenite (SiO2 based with various mineral cements)) — sedimentary

Sandstone

Arenite (SiO2 based with various mineral cements)

Conglomerate (Puddingstone) (Conglomerate (specifically, clastic sedimentary rock)) — Sedimentary

Conglomerate (Puddingstone)

Conglomerate (specifically, clastic sedimentary rock)

Diorite (Diorite (Intermediate Plutonic Rock)) — igneous

Diorite

Diorite (Intermediate Plutonic Rock)

Diorite (Diorite (Intermediate intrusive igneous rock)) — igneous

Diorite

Diorite (Intermediate intrusive igneous rock)

Granite (Granite (composed of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (composed of Quartz, Alkali Feldspar, and Plagioclase)

Rough Diamond (Diamond (pure Carbon, C)) — mineral

Rough Diamond

Diamond (pure Carbon, C)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

Diamond (in a jewelry setting) (Carbon (C)) — mineral

Diamond (in a jewelry setting)

Carbon (C)

Milky Quartz Cobble (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Cobble

Silicon Dioxide (SiO2)

Aquamarine (Beryl (Be₃Al₂Si‑₆O₁₈)) — mineral

Aquamarine

Beryl (Be₃Al₂Si‑₆O₁₈)

Diamond (Cubic carbon (C)) — mineral

Diamond

Cubic carbon (C)

Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

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