Unakite
Unakite (Episyenite composition: Feldspar, Epidote, and Quartz)
Category
Browse mineral, often found as a rock (metamorphic) specimens identified by the Rock Identifier community.
Unakite
Unakite (Episyenite composition: Feldspar, Epidote, and Quartz)
Pink Tourmaline (Rubellite)
Elbaite (Tourmaline group) - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (complex silicate minerals including lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Quartz Pebble (Water-worn Quartzite)
Silicon Dioxide (SiO2)
Unakite
Altered Granite (Orthoclase Feldspar, Epidote, and Quartz)
Agate
Silicon Dioxide (Chalcedony), SiO2
Green Calcite
Calcium Carbonate (CaCO3)
Granite Pebble
Intrusive Felsic Igneous Rock (Granite)
Gneiss with Quartz Vein
Metamorphic Gneiss with Quartz (SiO2) and Feldspar Injection
Basalt
Mafic Igneous Rock
Chert (specifically Yellow Jasper variety)
Silicon Dioxide (SiO2)
Quartz Vein / Quartz Matrix
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Agate (Polished Nodule)
Agate (Silicon Dioxide, SiO2)
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2) and Slate/Shale
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Chert (Siliceous Mudstone variant)
Microcrystalline quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Schist
Mica Schist (Metamorphic rock)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz-veined Granite or Gneiss Pebble
Silicate-rich metamorphic rock fragment
Greenschist
Chlorite Schist (Greenschist Facies)
Rose Quartz
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Magnetite with Serpentine
Magnetite (Fe3O4) in Serpentine Matrix
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
Lapis Lazuli
(Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2 (Complex silicate rock)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Laterite
Laterite (no specific mineral formula as it's a rock type)
Garnet (Almandine)
Almandine Fe3Al2(SiO4)3
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Epidote with Quartz Vein
Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)