Schist
Mica Schist
metamorphic
Category
Mineral
Browse mineral specimens identified by the Rock Identifier community.
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Manganese Dendrite on Siltstone
Manganese Oxide (pyrolusite or psilomelane) Dendrites
mineral/sedimentary
Pink Halite (Himalayan Salt)
Halite (Sodium Chloride, NaCl)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Diamond
Carbon (C)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Quartz with Hematite Staining
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions
mineral
Gold Quartz (Auriferous Quartz)
Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Diamond
Carbon (C)
mineral
Diamond
Diamond (C)
mineral
Bismuth
Native Bismuth (Bi)
mineral
Dyed Agate
Chalcedony (SiO2)
mineral
Dyed Howlite (often sold as 'Turquenite')
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Diamond
Carbon (C) - Native Element
mineral
Schist
Schist (variety likely Mica Schist)
metamorphic
Sulfur (on Matrix)
Native Sulfur (S8)
mineral
Greenschist (Greenstone River Pebble)
Greenschist (Chlorite Schist)
metamorphic
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite
Mineral (variety of Chalcedony)
Barite
Barium Sulfate (BaSO4)
mineral
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic plutonic rock (SiO2-rich)
igneous
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Gold Ore (in Quartz/Pyrite)
Native Gold (Au) with Quartz (SiO2) and Pyrite (FeS2)
mineral
Milky Quartz with Pyrite inclusions
Silicon Dioxide (SiO2) with Iron Disulfide (FeS2)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
igneous
Serpentine
Serpentinite (rock) containing serpentine minerals (e.g., Antigorite, Lizardite, Chrysotile)
Metamorphic rock
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Diamond
Carbon (C)
mineral
Diamond (Martapura/Borneo Diamond)
Carbon (C) - Diamond
mineral
Diamond (in a jewelry setting)
Carbon (C)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Concretion
Various mineral compositions, typically carbonate or iron oxide cemented sediment
Sedimentary
Snowflake Obsidian
Spherulitic Volcanic Glass (primarily SiO2)
igneous