Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Category
Metamorphic Rock (Primarily Composed Of Minerals)
Browse metamorphic rock (primarily composed of minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Primarily Composed Of Minerals) in the encyclopedia
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Devil's Toenail
Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)
sedimentary
Quartzite River Pebble
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety, likely a orthogneiss or paragneiss depending on parent rock)
Metamorphic Rock
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Mica Schist
Mica Schist (Composition typically contains Muscovite: KAl2(AlSi3O10)(OH)2 or Biotite: K(Mg,Fe)3AlSi3O10(OH)2 along with Quartz and Feldspar)
metamorphic
Sandstone (likely Siltstone or Mudstone)
Clastic sedimentary rock (primarily SiO2 with various oxides)
sedimentary
Pearl
Aragonite / Calcium Carbonate (CaCO3)
mineral
Serpentinite
Serpentinite (complex silicate minerals including lizardite, chrysotile, and antigorite)
metamorphic
Unidentified Rock Fragment
Unknown
Rock
Greenschist
Greenschist (comprising Actinolite, Chlorite, and Epidote)
metamorphic
Unakite
Epidotized Granite
metamorphic
Banded Gneiss
Foliated Gneiss
metamorphic
Unakite
Unakite (Epidotized Granite)
metamorphic
Gneiss
Gneiss
metamorphic
Quartzite / Sandstone / Chert Mix
Silicon Dioxide (SiO2)
sedimentary and metamorphic
Leopard Skin Jasper
Jasper (Silicon Dioxide with impurities), SiO2
sedimentary
Granite
Granite (Phaneritic Quartz-Feldspar Rock)
Igneous
Chalk
Calcium Carbonate (CaCO3)
sedimentary
Schist
Mica Schist
metamorphic
Garden Quartz (Lodolite)
Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)
mineral
Garnet Schist
Almandine Garnet-Mica Schist (X₃Y₂(SiO₄)₃)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions
metamorphic
Limonite Geode (Ironstone Concretion)
FeO(OH)·nH2O (Hydrated Iron Oxide)
sedimentary
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
igneous
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Metamorphic Rock
Mica Group Minerals
There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).
Mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Amber (Copal)
Succinite (fossilized resin)
mineral
Shale
Shale (clastic sedimentary rock composed of silt and clay-sized particles)
sedimentary
Eclogite
Eclogite (Omphacite-Garnet Rock)
metamorphic
Schist (Biotite/Mica Schist)
Medium-grade regional metamorphic rock (rich in Phyllosilicates)
metamorphic
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Granitic Gneiss
Gneiss (Polymetamorphic Granitic Gneiss)
metamorphic
Blue Sapphire
Corundum (Al2O3 - Aluminum Oxide with Iron and Titanium impurities)
mineral
Glaucophane Schist (Blueschist)
Blueschist (Glaucophane-bearing schist)
metamorphic
Orange Quartz / Quartzite
Silicon Dioxide (SiO2) with iron oxide inclusions
metamorphic
Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Chrysocolla (on host rock)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Copper silicate)
mineral
Quartz Mineral Specimens
Quartz (Silicon Dioxide, SiO2)
mineral