Fuchsite
Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Fuchsite
Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Quartzite
Metamorphic Rock (Quartzite)
Quartz Geode
Silicon Dioxide (SiO2) in a sedimentary or volcanic host
Dark metamorphic rock, likely hornfels or fine-grained basalt
Probable hornfels; commonly quartz–feldspar–mica with variable amphibole/pyroxene
Gneiss (with Quartz Vein / Pegmatite Banding)
Metamorphic Gneiss
Quartz (Smoky/Brown variety)
Silicon dioxide (SiO2)
Smoky Quartz
SiO2 (Silicon Dioxide)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Serpentine
Serpentine subgroup (Mg3Si2O5(OH)4)
Quartz Vein in Basalt or Slate
Hydrothermal quartz vein traversing mafic host rock
Rose Quartz
Silicon Dioxide with trace inclusions of dumortierite or titanium (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Quartz
Silicon Dioxide (SiO2)
Quartz
Quartz (SiO₂)
Quartzite
Quartzite (primarily SiO2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Tumbled jasper (likely brecciated or ocean jasper)
Microcrystalline quartz (SiO₂), with iron-oxide staining and possible chalcedony
Milky Quartz
Silicon Dioxide (SiO2)
Serpentine
Antigorite, Lizardite, or Chrysotile; (Mg, Fe)3Si2O5(OH)4
Quartzite
Metamorphic Quartz Rock
Quartz
Silicon Dioxide (SiO2)
Chert / Flint
Microcrystalline quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
Jasper with Quartz
Silicon dioxide (SiO2)
Sandstone (Micaceous Sandstone)
Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)
Serpentine (Serpentinite)
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Quartz
Silicon Dioxide (SiO2)
Serpentine
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Greenstone / Graywacke
Metagraywacke (Chlorite-grade schistose rock)
White Quartz
Silicon Dioxide (SiO2)
Veined Quartz
SiO2 (Silicon Dioxide)
White Quartz
Silicon Dioxide (SiO2)
Quartz (Tumbled)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Quartz (milky quartz variety)
Quartz (SiO₂)
Banded Gneiss Pebble
Gneiss (Metamorphic Rock)