Rock Identifier

Category

Mineral Composite

Browse mineral composite specimens identified by the Rock Identifier community.

Learn about Mineral Composite in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Sea Sediment Jasper

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Amethyst (Silicon dioxide (SiO2)) — mineral

Amethyst

Silicon dioxide (SiO2)

Tiger's Eye (Silicon dioxide with crocidolite inclusions (SiO2)) — mineral

Tiger's Eye

Silicon dioxide with crocidolite inclusions (SiO2)

Quartz in Host Rock (Silicon Dioxide (SiO2)) — mineral

Quartz in Host Rock

Silicon Dioxide (SiO2)

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

Quartz Crystal in Matrix

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (White/Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (White/Milky Quartz)

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Quartz (Orange/Pink variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Orange/Pink variety)

Silicon Dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — mineral

Jasper

Microcrystalline Quartz (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Amethyst (Quartz (Silicon Dioxide, SiO2)) — gemstone

Amethyst

Quartz (Silicon Dioxide, SiO2)

Quartz (Rose Quartz / Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rose Quartz / Quartz Pebble)

Silicon Dioxide (SiO2)

Emerald in Quartz Matrix (Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium) — gemstone

Emerald in Quartz Matrix

Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

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

Amethyst (Rough)

Silicon Dioxide (SiO2) with iron impurities

Citrine (Silicon Dioxide (SiO2)) — gemstone

Citrine

Silicon Dioxide (SiO2)

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

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Prehnite (Ca2Al2Si3O10(OH)2) — mineral

Prehnite

Ca2Al2Si3O10(OH)2

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Emerald in Matrix (Beryl (Be3Al2Si6O18)) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18)

Geode (Unopened) (Silicon dioxide with various inclusions (SiO2)) — sedimentary

Geode (Unopened)

Silicon dioxide with various inclusions (SiO2)

Precious Opal in Matrix (Hydrated Silica (SiO2·nH2O)) — mineral

Precious Opal in Matrix

Hydrated Silica (SiO2·nH2O)

Peridot (Olivine (Mg, Fe)2SiO4) — mineral

Peridot

Olivine (Mg, Fe)2SiO4

Lake Superior Agate (Agate (Cryptocrystalline variety of Quartz, SiO2)) — mineral

Lake Superior Agate

Agate (Cryptocrystalline variety of Quartz, SiO2)

Amazonite (Microcline (KAlSi3O8) with lead impurities) — mineral

Amazonite

Microcline (KAlSi3O8) with lead impurities

Citrine (Crystalline Quartz (SiO2) with iron impurities) — mineral

Citrine

Crystalline Quartz (SiO2) with iron impurities

Emerald (Beryl (Be3Al2(SiO3)6) with chromium/vanadium impurities) — mineral

Emerald

Beryl (Be3Al2(SiO3)6) with chromium/vanadium impurities

Granite (Granite) — Igneous

Granite

Granite

Unakite (Altered Granite (Epidotized Granite)) — metamorphic

Unakite

Altered Granite (Epidotized Granite)

Granite Pebble (Granite) — igneous

Granite Pebble

Granite

Yellow Jasper (Chalcedony (Silicon Dioxide with Iron inclusions), SiO2) — sedimentary

Yellow Jasper

Chalcedony (Silicon Dioxide with Iron inclusions), SiO2

Basalt (River Rock/Cobble) (Basalt (no specific mineral formula as it's a rock)) — Igneous

Basalt (River Rock/Cobble)

Basalt (no specific mineral formula as it's a rock)

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Granite fragment (Felsic intrusive igneous rock; mainly quartz, alkali feldspar, plagioclase, and minor biotite/hornblende) — igneous

Granite fragment

Felsic intrusive igneous rock; mainly quartz, alkali feldspar, plagioclase, and minor biotite/hornblende

Quartz Boulder (Silicon Dioxide (SiO2)) — mineral

Quartz Boulder

Silicon Dioxide (SiO2)

Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — sedimentary

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Magnetite-rich Basalt (Basalt containing Fe3O4) — igneous

Magnetite-rich Basalt

Basalt containing Fe3O4

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)