Quartz-rich granite or granitic gneiss
Granite; primarily quartz (SiO₂), feldspar, and mica, possibly weakly metamorphosed
Category
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
Quartz-rich granite or granitic gneiss
Granite; primarily quartz (SiO₂), feldspar, and mica, possibly weakly metamorphosed
Zebra Jasper (usually a trade name for Serpentine or Basalt blend)
Antigorite/Chrysotile (Serpentine family) - Mg3Si2O5(OH)4
Unakite (likely)
Epidote–pink feldspar–quartz rock; commonly termed unakite
Quartzite with Iron Inclusions
Quartzite (primarily SiO2 with Fe2O3 impurities)
Blue Sapphire
Corundum (Al2O3)
Agate (Polished Nodule)
Agate (Silicon Dioxide, SiO2)
Black Sapphire
Corundum (Al2O3 with iron and titanium impurities)
Golden Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Eclogite
Eclogite (Omphacite + Pyrope-Almandine Garnet)
Serpentine
Serpentinite (group of hydrous magnesium iron phyllosilicate minerals)
Quartzite
Quartzite (SiO2)
Yellow Quartzite (River Cobble)
Quartzite (SiO2 with iron oxide staining)
Quartzite
Quartzite (SiO2)
Quartzite Cobble
Quartzite (primarily SiO2)
Quartzite Pebble
Quartzite (composed primarily of Silica, SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite cobblestone
Quartzite (primarily SiO2)
Quartzite Pebble
Quartzite (SiO2)
Yellow Quartzite (or Yellow Chalcedony Pebble)
Silicon Dioxide (SiO2)
Iron-stained Quartzite
Recrystallized Quartz (SiO2) with Hematite/Limonite staining
Quartzite
Quartzite (primarily SiO2)
Quartzite Pebble
Quartzite (primarily SiO2)
Quartzite Pebbles
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite Pebble
Quartzite (principally Silicon Dioxide, SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite Cobble
Quartzite (predominantly SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Hematite
Iron Oxide (Fe2O3)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
Rhodonite
Manganese Inosilicate (MnSiO3)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Mica Schist
Mica-Quartz Schist (Chemical: SiO2 + KAl2(AlSi3O10)(OH)2)
Kyanite
Kyanite (Al2SiO5)
Chert (Quartz Variety)
Chert (Silicon Dioxide, SiO2)
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)