Hypersthene (or Enstatite/Ferrosilite)
Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Hypersthene (or Enstatite/Ferrosilite)
Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)
Specular Hematite
Hematite (Fe2O3)
Yellow Quartzite (River Pebble)
Quartzite (SiO2 with iron oxide impurities)
Milky Quartz
Silicon Dioxide (SiO2)
Diorite (weathered)
Intermediate plutonic igneous rock
Ferruginous Quartz (Iron-stained Quartz)
Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)
Quartzite with Iron Inclusions
Metamorphosed Quartz Arenite (SiO2)
Quartzite with Quartz Vein
Metamorphosed sandstone (SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Quartzite
Quartzite (SiO2)
Quartz (Pinkish-Orange Variety)
Crystalline Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Jasper with Quartz Vein
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Quartzite
Quartzite (primarily SiO2)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Quartzite
Quartzite (primarily SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
Agate (Geode nodule)
Cryptocrystalline Quartz (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Unakite
Epidotized Granite
Banded Gneiss
Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)
Schist
Mica Schist (primarily Muscovite and Quartz)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Quartzite River Rock
Quartzite (SiO2)
Unakite (or Epidotized Granite)
Epidotized Granite (Composition: KAlSi3O8, Ca2(Al,Fe)3(SiO4)3(OH), SiO2)
River Pebbles (White Quartz and Basalt mix)
Mixed Clastic Sedimentary Assemblage (SiO2 and Mafic Volcanics)
Mica Schist
Mica Schist (Quartz-Biotit-Muscovite Schist)
Slate River Stone
Foliated Metamorphic Rock (composed of illite, chlorite, and quartz)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Gneiss (specifically Pink Gneiss)
Gneiss (high-grade regional metamorphic rock)
Quartzite
Quartzite (primarily SiO2)
Chert (Polished Gemstone / River Stone)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartz Crystal (specifically Rock Crystal)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese