Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Category
Browse mineral (variant of quartz) specimens identified by the Rock Identifier community.
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Quartzite variant)
Silicon Dioxide (SiO2)
Agate (Lake Superior Agate variant)
Chalcedony / Silicon Dioxide (SiO2)
Conglomerate
Clastic sedimentary rock (Psephite)
River Pebble (Gneiss or Quartzite variant)
Course-grained Metamorphic Rock (likely SiO2 dominant)
Obsidian
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Greenstone / Serpentinite
Serpentinite (composed primarily of serpentine minerals: Mg3Si2O5(OH)4)
Chert (specifically Flint or Jasper variant)
Microcrystalline silica (SiO2)
Sandstone (Greywacke/Siltstone variant)
Arenite / Wacke (SiO2 with diverse mineral inclusions)
Sandstone (likely Greywacke variant)
Arenite
Atlantic Calico Scallop (Biogenic Aragonite/Calcite)
Argopecten gibbus (Chemical: CaCO3)
Chalcedony (Agate/Carnelian variant)
Cryptocrystalline Silica (SiO2)
Sunstone (Orthoclase Feldspar variant)
Orthoclase (KAlSi3O8) with inclusions
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
Sandstone (Yellow/Siltstone variant)
Arenite (SiO2 primarily)
Sandstone (lithic/greywacke variant)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
Red Jasper with Fossils
Silicified Fossiliferous Jasper (Chert variant, SiO2)
River Cobble (Quartzite-rich Sandstone)
Clastic Sedimentary Rock (Litharenite/Quartzite transition)
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with microcrystalline structure
Chert Pebble
Silicon dioxide (SiO2)
Hematite (likely Botryoidal or Specularite variant)
Iron(III) oxide (Fe2O3)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Chalcedony (Moonstone variant or White Agate)
Silicon Dioxide (SiO₂)
Granite (White Granite variant)
Phaneritic Plutonic Rock (High-silica Felsic)
Diamond
Carbon (C)
Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
Yellow Jasper (Chert variant)
Silicon Dioxide (SiO2) with iron inclusions
Riverstone Jasper (Chert variant)
Silicon Dioxide (SiO2)
Chert (including Flint and Jasper variants)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Serpentinite
Serpentinite (composed largely of serpentine group minerals including Antigorite, Lizardite, or Chrysotile)
Sandstone (Micaceous/Feldspathic variant)
Arenite (specifically subarkose or lithic arenite)
Chalcedony (Common Opal variant or Agate)
Silicon Dioxide (SiO2)
Sandstone (Greywacke/Siltstone variant)
Clastic Sedimentary Rock (Lithic Wacke)
Jasper (specifically Red or Brecciated Jasper variant)
Jasper (Microcrystalline Quartz - SiO2)
Chert (specifically Flint or Jasper variant)
Chert (Siliceous rock composed of microcrystalline Quartz, SiO2)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Jasper with Cinnabar (Dragon Blood Jasper variant)
Silicon Dioxide with Mercury Sulfide (SiO2 + HgS)