Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Category
Sedimentary Rock (Technically A Microcrystalline Quartz Mineral Aggregate)
Browse sedimentary rock (technically a microcrystalline quartz mineral aggregate) specimens identified by the Rock Identifier community.
Sandstone
Arenite
sedimentary
Green Jasper (with Quartz veining)
Jasper (Silica-rich microcrystalline variety of Quartz), formula: SiO2
sedimentary
Sandstone (likely Ferruginous)
Arenite (SiO2 with iron oxide impurities)
sedimentary
Granite
Granite (Felsic Intrusive Igneous Rock)
igneous
Milky Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Epidote-bearing Granite (Unakite-like)
Epidotized Granite
igneous
Vesicular Basalt with Quartz
Vesicular Basalt (SiO2 inclusions)
igneous
Agate Geode
Silicon Dioxide (SiO2) - Banded Chalcedony
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (with secondary mineral infilling)
igneous
Limestone
Calcium carbonate ( преимущественно CaCO3)
sedimentary
Quartz Druzy (on Calcedony/Quartz base)
Silicon Dioxide (SiO2)
mineral
Chert (often called Flint or River Stone)
Chert (SiO2)
sedimentary
Quartz Geode/Druzy Quartz
Quartz (SiO₂)
Mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with inclusions)
metamorphic
Gneiss
Gneiss
metamorphic
Tree Agate
Silicon Dioxide (SiO2) with Dendritic Inclusions
Mineral
Geode (unopened)
SiO2 - Chert-shelled concretion (mostly Quartz)
sedimentary
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz, SiO2)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Granite / Gneiss Complex
Felsic Plutonic Rock (Granite) or High-grade Metamorphic Rock (Gneiss)
igneous/metamorphic
Sandstone
Clastic Sedimentary Rock (composed mostly of SiO2)
sedimentary
Dendritic Agate
Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2) in a Geode body
sedimentary or igneous (host environment)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (Flint nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Terrazzo (with Marble and Granite fragments)
Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates
sedimentary (man-made composite)
Sandstone with Iron Concretion
Arenite with Limonite/Goethite Concretion
sedimentary
Chert (Nodular or Fossiliferous)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Jasper (specifically Bloodstone or Heliotrope variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary (chemically precipitated)
Sandstone (Quartzite-rich Pebble)
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartz-rich)
Arenite (primarily SiO2)
sedimentary
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
mineral
Yellow Chert (Microcrystalline Quartz)
Chert / SiO2 (Silicon Dioxide)
sedimentary
Blue Lace Agate (Tumbled)
Silicon Dioxide (SiO2)
mineral
Septarian Nodule
Septarian Concretion (CaCO3 with Siderite/Limonite streaks)
sedimentary
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral