Serpentine
Serpentinite (group of minerals: (Mg,Fe,Ni,Al)3Si2O5(OH)4)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Serpentine
Serpentinite (group of minerals: (Mg,Fe,Ni,Al)3Si2O5(OH)4)
Garnet
Garnet Group (complex nesosilicates with general formula X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+, V3+)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chalcedony (Quartz Pebbles)
Silicon Dioxide (SiO2)
Carnelian (a variety of Chalcedony)
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
Vesicular Basalt (River Pebble)
Vesicular Basalt
Druzy Quartz
Quartz (Silicon Dioxide, SiO2)
Quartzite
Quartzite (mainly SiO2)
Quartzite Pebbles
Quartzite (SiO2 silicon dioxide dominant)
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
Feldspathic Gneiss (Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Chert (Brown variety / Common Jasper)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Silicon dioxide (SiO2)
Basalt with Amygdule
Aphanitic Mafic Volcanic Rock (Basalt) with Zeolite/Quartz Infill
Quartzite (River Cobble)
Quartzite (dominant mineral: Quatrz, SiO2)
Quartzite (Beach Pebble)
Quartzite (primarily SiO2)
Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Milky Quartz
Silicon Dioxide (SiO2)
Conglomerate
Conglomerate (clastic sedimentary rock)
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite
Druzy Agate (specifically Black Druzy Agate)
Silicon Dioxide (SiO2)
Pink Granite
Granite (Phaneritic Acidic Igneous Rock)
Petrified Wood
Silicified Wood (SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide staining/cementing)
Blue Sapphire (Raw)
Corundum (Al2O3)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Quartzite River Rock
Quartzite (SiO2)
Quartzite
Quartzite (consisting primarily of SiO2)
Garnet Schist
Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)
Banded Agate (specifically Carnelian Agate)
Silicon Dioxide (SiO2)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Blue Banded Agate (Dyed)
Silicon Dioxide (SiO2) - Variety of Chalcedony
River Quartz Pitting/Cobble
Silicon Dioxide (SiO2)
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)