Quartzite (Beach Pebble)
Quartzite (composed primarily of SiO2)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Quartzite (Beach Pebble)
Quartzite (composed primarily of SiO2)
Red Jasper with Quartz Veins
Microcrystalline Quartz (SiO2) with Ferric Oxide (Fe2O3) inclusions
Chert (varietal Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Orbicular Jasper (Ocean Jasper)
Silicon Dioxide (SiO2) with various inclusions
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Schist
Crystalline Schist (often containing Muscovite, Biotte, or Quartz)
Mica Schist
Mica Schist (Main mineral constituents: Muscovite/Biotite, Quartz, Feldspar)
Sandstone (with possibly iron oxides and other minerals)
Sandstone
Epidosite
Epidosite (Metasomatic calcium-aluminum silicate rock)
Banded Chert or Agate
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Chert (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3 - Aluminum Oxide with Iron and Titanium impurities)
Orthoclase Feldspar (or K-Feldspar)
Orthoclase (KAlSi3O8)
Quartzite River Rock
Quartzite (primarily SiO2)
Chert (Pink Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Quartz Vein in Host Rock (Gossanous Matrtix)
Silicon Dioxide (SiO2) with iron oxides (Limonite/Hematite)
Diorite
Diorite (Intermediate intrusive igneous rock)
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
Amethyst Quartz
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3)
Jasper (Iron-rich Microcrystalline Quartz)
Silicon Dioxide (SiO2) with Hematite inclusions
Quartz Cobble (River Rock)
Silicon Dioxide (SiO2)
Emerald in Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Sandstone (Red/Brown Variety)
Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz (Milky or Clear Quartz fragment)
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Garnet Schist
Mica Schist with Almandine (Fe3Al2(SiO4)3)
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
Milky Quartz
Silicon Dioxide (SiO2)
Conglomerate
Conglomerate (Clastic sedimentary rock)
Granite cobble
Granite (composed primarily of Quartz, Feldspar, and Mica)
Yellow Quartzite (Beach Pebble)
Quartzite (primarily SiO2)
Amethyst Lace Agate / Banded Amethyst
Silicon Dioxide (SiO2) with Fe3+ impurities
Carnelian
Carnelian (SiO2)
Agate
Silicon Dioxide (SiO2)