Schist
Mica Schist
metamorphic
Category
Mineral (Synthetic)
Browse mineral (synthetic) specimens identified by the Rock Identifier community.
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Shale
Fissile Mudrock (Clay-rich Sedimentary Rock)
sedimentary
Ametrine
Silicon Dioxide (SiO2) with impurities of iron
mineral
Gold (Elemental Metal)
Gold (Au)
Mineral
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Quartz with Mica inclusions (likely Schist or Gneiss host)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Dyed Quartz (imitating Emerald/Green Quartz)
Silicon Dioxide (SiO2) with artificial pigment
mineral
Porphyritic Basalt
Porphyritic Basalt (with Plagioclase and Augite phenocrysts)
igneous
Quartz with Schist Inclusion
Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 containing Fuchsite)
metamorphic
Pink Granite
Granite (Felsic Plutonic Rock)
igneous
Red Jasper with Quartz Veining
Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions
sedimentary
Granite Cobble
Phaneritic Felsic Igneous Rock
igneous
Garden Quartz (Lodolite)
Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)
mineral
Bort or Carbonado
C - Polycrystalline Diamond
mineral
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-feldspar, Quartz, and Biotite)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Greenstone
Greenschist
metamorphic
Green Aventurine
Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Porphyritic Rhyolite
Porphyritic Rhyolite (SiO2)
igneous
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Schist
Mica Schist
metamorphic
Moonstone
Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)
mineral
Basalt with Quartz Vein
Basalt (extrusive igneous rock) with Quartz (SiO2) inclusion
igneous
Granite or Granitic Gneiss
Granitoid / Gneiss
Igneous / Metamorphic
Gneiss
High-grade regional metamorphic rock
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Limonite after Pyrite (Prophecy Stone or Ironstone Concretion)
Goethite/Limonite pseudomorph after Pyrite/Marcasite (FeO(OH)·nH2O)
mineral
Pyrite in Shaly Matrix
Iron Sulfide (FeS2)
mineral
Greenstone
Chlorite schist or metabasalt depending on specific composition
Metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Lapis Lazuli
Lapis Lazuli (Complex aggregate containing Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)
metamorphic
Fossilized Bone Chunk (likely Dinosaur or Large Mammal)
Permineralized Fossil Bone
sedimentary
Diorite
Phaneritic intermediate plutonic rock (Diorite)
igneous
Quartz (Druzy) in host rock
SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)
Mineral
Orange Calcite
Calcite (CaCO3)
Mineral
Manganese-coated Sandstone
Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)
sedimentary
Amazonite
Microcline (KAlSi3O8) with Pb impurities
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral