Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Category
Sedimentary And Igneous (Mixed)
Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Peridot
Olivine (Mg, Fe)2SiO4
mineral
Quartz (Amethyst variety)
Silicon Dioxide (SiO2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
KAl2(AlSi3O10)(F,OH)2
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
River Quartz (Milky and Smoky mix)
Silicon Dioxide (SiO2)
mineral
Almandine Garnet
Fe3Al2(SiO4)3
mineral
Quartz on Chlorite Schist
Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)
metamorphic
Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
mineral
Mica (Muscovite)
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Garnet
Garnet Group (formula varies, e.g., Almasndine: Fe3Al2(SiO4)3)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodalite (Sodium Aluminum Silicate Chloride) - Na8(Al6Si6O24)Cl2
mineral
Citrine Quartz
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Prehnite on Basalt
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Beryl (Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
Rose Quartz
SiO2 (Silicon Dioxide with trace amounts of titanium, iron, or manganese)
mineral
Peach Moonstone
Potassium Aluminum Silicate, KAlSi3O8
mineral
Biotite Schist
Biotite Schist (predominantly K(Mg,Fe)3AlSi3O10(OH,F)2)
metamorphic
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Granodiorite (River Pebble)
Granodiorite
igneous
Granite
Phaneritic Plutonic Felsic Rock
igneous
Granite
Phaneritic plutonic rock (SiO2 range 65-75%)
igneous
Granite
Granite (Felsic intrusive igneous rock)
igneous
Black Obsidian
Volcanic Glass (SiO2 + impurities)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Apache Tear (Obsidian)
Volcanic glass (SiO2 - Silicon Dioxide)
igneous
Basalt
Basalt
igneous
Quartz in Basalt (Xenocryst)
Silicon Dioxide (SiO2) in Mafic Igneous Volcanic Rock
Igneous
Granite
Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Granodiorite
Granodiorite (Intermediate to Felsic Intrusive Rock)
igneous
Pink Granite
Granite (Phaneritic igneous rock rich in Orthoclase)
igneous
Iron-Nickel Meteorite
Siderite (Meteoric Iron-Nickel alloy)
igneous
Basalt with Granite Inclusions (Xenoliths)
Mafic igneous rock (Basalt) with Sialic minerals
igneous
Granite
Phaneritic plutonic felsic igneous rock
igneous