Muscovite Mica
Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2
Mineral
Category
Granite
Browse granite specimens identified by the Rock Identifier community.
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Lepidolite Bracelet
Lepidolite (K(Li,Al)3(Si,Al)4O10(F,OH)2) often in Quartz matrix
Mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Quartz
Quartz (Silicon Dioxide - SiO2)
Mineral
Smoky Quartz
Smoky Quartz (SiO2)
Mineral
Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)
Quartz (SiO₂)
Mineral
Banded Gneiss
Gneiss (pronounced "nice")
metamorphic
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Feldspar-Quartz Rock (likely Pegmatite or Granite)
Feldspar-Quartz composite rock (KAlSi3O8 - SiO2)
igneous
Schist
Schist (various mineralogical compositions including mica, chlorite, talc, etc.)
Metamorphic
Quartz
Quartz (SiO₂)
Mineral
Quartz (likely Rose Quartz or Milky Quartz based on color)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
metamorphic
Amethyst
Amethyst (SiO₂)
Mineral
Rutilated Quartz
Quartz with Rutile inclusions (SiO2 with TiO2 inclusions)
mineral
Topaz
Topaz (Al2SiO4(F,OH)2)
Mineral
Citrine
Quartz (SiO2) - specifically, a variety of macrocrystalline quartz
mineral
K2 Jasper (Beads)
Granodiorite with Azurite and Malachite
igneous
Quartz
Silicon Dioxide (SiO2)
Mineral
Labradorite
Labradorite (a variety of Plagioclase Feldspar), Na(AlSi3O8) to Ca(Al2Si2O8)
Mineral
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
igneous or metamorphic (base stone); anthropogenic (decoration)
Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)
Quartz (SiO₂)
Mineral
Aquamarine
Aquamarine (Beryl variety) - Be3Al2(Si6O18)
mineral
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
Amazonite
Amazonite (KAlSi3O8)
mineral
Moonstone
Orthoclase Feldspar (specifically showing adularescence)
Mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Quartz
Silicon Dioxide (SiO₂)
Mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Clear Quartz (Rock Crystal)
Quartz (SiO₂)
Mineral
Rose Quartz
Rose Quartz (SiO2)
Mineral
Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Kunzite
Spodumene (LiAlSi2O6), variety Kunzite
Mineral
Tourmaline (likely Schorl)
Tourmaline Group Mineral (e.g., Schorl for black varieties); (Na,Ca)(Li,Mg,Fe,Mn,Al)3Al6(BO3)3Si6O18(OH)4
Mineral
Amazonite
Amazonite (KAlSi3O8, a variety of Microcline)
Mineral
Quartz (in a rock matrix)
Quartz (SiO2)
mineral
Milky Quartz
Quartz (SiO₂)
Mineral
Banded Gneiss (with possible weathered sulfide or iron staining)
Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides
Metamorphic