Granite
Course-grained intrusive igneous rock
igneous
Category
Mineral Variant
Browse mineral variant specimens identified by the Rock Identifier community.
Learn about Mineral Variant in the encyclopedia
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Sandstone (Yellow/Siltstone variant)
Arenite (SiO2 primarily)
sedimentary
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Chert (Nodule)
Chert (composed of Microcrystalline Silica/SiO2)
sedimentary
Sandstone (Greywacke/Siltstone variant)
Arenite / Wacke (SiO2 with diverse mineral inclusions)
sedimentary
Chert / Flint (Yellow Jasper Variant)
Microcrystalline Quartz (SiO2 with Iron Oxide impurities)
sedimentary
Chert (Common Opal variant)
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert (variant of Flint)
Chert (SiO2)
Sedimentary
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Carnelian
SiO2 (Silicon Dioxide - Chalcedony variant)
gemstone
Jet
Lignite coal variant (hydrocarbon polymer)
sedimentary
Chert (Green and Black Jasper variant)
Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (lithic)
Lithic Wacke / Arenite
sedimentary
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Desert Rose (Baryte or Gypsum Rose)
Baryte (BaSO4) or Gypsum (CaSO4·2H2O)
mineral
Granite
Felsic intrusive igneous rock
igneous
Red Granite
Phaneritic Felsic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Atlantic Calico Scallop (Biogenic Aragonite/Calcite)
Argopecten gibbus (Chemical: CaCO3)
mineral
Sandstone
Arenite (Sedimentary rock comprising sand-sized grains)
sedimentary
Granite (White Granite variant)
Phaneritic Plutonic Rock (High-silica Felsic)
igneous
Chert (River Stone)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (lithic/greywacke variant)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
sedimentary
Greenstone / Serpentinite
Serpentinite (composed primarily of serpentine minerals: Mg3Si2O5(OH)4)
metamorphic
Orthoclase Feldspar
Orthoclase (KAlSi₃O₈)
mineral
Chert (Red Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Obsidian
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
Igneous
Ferruginous Sandstone
Sandstone (enriched with Iron Oxide)
sedimentary
Flint (Chert variant)
Microcrystalline Quartz (SiO2)
sedimentary
Flint (Chert variant)
Silica (SiO2) - Microcrystalline Quartz
sedimentary
Quartz (Milky or Smoky variant)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Quartz (Chert/Chalcedony variant)
Silicon dioxide (SiO2)
mineral
Quartz (Smoky/Milky variant)
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Milky variant)
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Milky variant)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with microcrystalline structure
mineral
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary