Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Category
Mineral And Metamorphic Rock
Browse mineral and metamorphic rock specimens identified by the Rock Identifier community.
Learn about Mineral And Metamorphic Rock in the encyclopedia
View all →
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Greenstone / Serpentinite
Serpentinite (composed primarily of serpentine minerals: Mg3Si2O5(OH)4)
metamorphic
Greenstone (or River-tumbled Basalt / Greywacke with Epidote)
Metabasalt / Greenschist facies rock
metamorphic
Blue Sapphire
Corundum (Al2O3 - Aluminum Oxide with Iron and Titanium impurities)
mineral
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Quartz-rich hydrothermal ore rock, likely gold-bearing quartz vein
Milky quartz (SiO₂) with iron-oxide staining and probable sulfide minerals; host rock may be schist or altered granite
metamorphic
Quartz Pebble
Quartz (SiO2)
sedimentary
Mixed Quartz and River Pebbles (Stone Collection)
Mixed assortment containing mainly Silicon Dioxide (SiO2)
igneous, sedimentary, metamorphic, and mineral
Quartzite with Iron Mineral Banding
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) staining
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Tektite
Impactite (Natural Silicate Glass)
meteorite
Garnet in Schist (Garnetiferous Micaceous Schist)
Almandine Garnet, Fe3Al2(SiO4)3
metamorphic
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Mica Schist
Mica Schist (contains Muscovite KAl2(AlSi3O10)(OH)2)
metamorphic
Gneiss
Foliated Metamorphic Gneiss
metamorphic
Green serpentine
Serpentine-group minerals, chiefly lizardite and antigorite; approximate formula Mg₃Si₂O₅(OH)₄
metamorphic
Serpentine
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Iron-rich quartzite or ferruginous metamorphic rock
Quartzite, predominantly SiO₂, stained by iron oxides (hematite/goethite)
metamorphic
Gneiss
Foliated Metamorphic Gneiss
metamorphic
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Greenstone (Epidosite/Altered Diorite)
Metabasalt or Meta-andesite / Epidotized Diorite
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Dark Emperador Marble
Recrystallized Calcitic Marble
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz-rich rock, possibly milky quartz or quartzite
Quartz (SiO₂), potentially quartzite if the grains are fused
mineral
Quartzite with Iron Inclusions
Metamorphic Quartzite (SiO2 with Fe2O3 trace impurities)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix
metamorphic
Lava Stone and Chakra Beads
Basalt (with various mineral/synthetic beads)
igneous
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
metamorphic
Greenstone (Diabase or Metabasalt)
Metamorphosed Mafic Igneous Rock
metamorphic
Possible graphite-bearing schist
Graphitic mica schist; predominantly quartz, mica, and graphite
metamorphic
Quartz (Common Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Khondalite
Garnet-Sillimanite-Graphite Gneiss
metamorphic
Marble
Recrystallized Calcite Rock (CaCO3)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Amphibolite / Hornblende Schist
Amphibolite
metamorphic
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Nuummite
Nuummite (ortho-amphibole rock)
metamorphic
Lichen-covered graywacke or granitic glacial cobble
Indeterminate; likely quartz–feldspar–mica rock, possibly weathered granite or granodiorite
igneous