Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Mineral
Category
Metamorphic (Pseudo Igneous)
Browse metamorphic (pseudo igneous) specimens identified by the Rock Identifier community.
Learn about Metamorphic (Pseudo Igneous) in the encyclopedia
View all →
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Aventurine (likely Green Aventurine)
Silicon Dioxide (SiO2) with various inclusions
Mineral, variety of Quartz
Smoky Quartz
SiO2 (Silicon Dioxide)
Mineral
Yellow Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)
Mineral
Garnet (likely Almandine or Pyrope)
Garnet Group (e.g., Almandine: Fe3Al2(SiO4)3; Pyrope: Mg3Al2(SiO4)3)
Mineral
Amethyst
Quartz (SiO2) variety
Mineral
Citrine
SiO2 (Silicon Dioxide)
Mineral
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Gneiss
Gneiss (pronounced 'nice')
Metamorphic Rock
Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz)
Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates
igneous, sedimentary, and metamorphic
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety, likely a orthogneiss or paragneiss depending on parent rock)
Metamorphic Rock
Milky Quartz
Quartz (SiO₂)
Mineral
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Gold
Aurum (Elemental Gold, Au)
Mineral, Metal (element)
Quartz (in matrix)
Quartz (SiO₂)
mineral
Banded Gneiss
Gneiss (pronounced "nice")
Metamorphic Rock
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Mineral
Smoky Quartz
SiO2 (Silicon Dioxide)
Mineral
Citrine
Quartz (SiO₂) variety
Mineral
Quartz (Crystal/Druzy Quartz)
Quartz (SiO₂)
Mineral
Quartz (likely) or a Quartzite Pebble
Silicon dioxide (SiO2) for quartz. If it's quartzite, it's a metamorphic rock primarily composed of quartz.
Mineral, specifically a detrital grain
Clear Quartz (beads in a bracelet)
Quartz (SiO2)
Mineral
Quartz Vein in Gneiss or Basalt
Milky Quartz (SiO2) within Metamorphic Host Rock
Metamorphic or Igneous with Mineral Inclusion
Rose Quartz
Rose Quartz (SiO2)
Mineral
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Mineral
Quartz
Silicon dioxide (SiO₂)
Mineral
Moss Agate
Moss Agate (a variety of Chalcedony, SiO ₂)
Mineral (specifically a variety of Chalcedony, which is microcrystalline Quartz)
Quartz
Quartz (SiO2)
Mineral
Amethyst
SiO2 (Silicon Dioxide) - a variety of Quartz
Mineral
Orange Calcite
Calcite (CaCO3)
Mineral
Granite
Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)
igneous
Sapphire (Corundum)
Corundum (Al2O3), variety Sapphire
Mineral
Magnetic Hematite
Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)
Mineral
Rutilated Quartz
SiO2 with TiO2 inclusions (Rutile)
Mineral
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Mineral
Strawberry Quartz
Quartz (SiO₂) with Goethite (α-FeO(OH)) and/or Lepidocrocite (γ-FeO(OH)) inclusions
Mineral
Hematite
Hematite (Fe2O3)
Mineral
Muscovite Mica
Muscovite (KAl₂(AlSi₃O₁₀)(F,OH)₂))
Mineral
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
Mineral