Quartz Geode
Quartz (SiO2) within a geode structure
mineral
Category
Mineral (Synthetic)
Browse mineral (synthetic) specimens identified by the Rock Identifier community.
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Epidosite (Epidote-Quartz rock)
Epidote-rich hydrothermal rock
metamorphic
Limonite with Goethite
Iron Hydroxide Mixture (FeO(OH)·nH2O)
mineral
Azurite
Azurite (Cu3(CO3)2(OH)2)
mineral
Quartz (Milk Quartz Cobble)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Chlorite/Amphibite Inclusions
Silicon Dioxide (SiO2) with various mineral inclusions
mineral
Shale with Iron Oxide Staining
Fissile Mudstone (primarily clay minerals and quartz)
sedimentary
Vesicular Basalt (Scoria)
Basalt (Extrusive Igneous Rock)
igneous
Chert Conglomerate (or Breccia)
Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)
sedimentary
Basalt Porphyry
Porphyritic Basalt
igneous
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)
Mineral
Chert (Jasper/Flint variant)
Microcrystalline Quartz (SiO2)
sedimentary
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
anthropogenic sedimentary (technolith)
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Granite or Granodiorite (weathered fieldstone)
Granitoid
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and other mineral inclusions
mineral
Granite Pebble
Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)
igneous
Pegmatite
Coarse-grained Igneous Rock (Granitic Pegmatite)
igneous
Fossilized Shark Tooth
Elasmobranchii (Class) fossil
fossil
Quartz with Pyrite and Iron Staining
Silicon Dioxide (SiO2) with Iron Disulfide (FeS2) inclusions
mineral
Pegmatitic Granite
Granite with Orthoclase Feldspar and Quartz (SiO2, KAlSi3O8)
igneous
Granite (Fine-grained)
Phaneritic Felsic Igneous Rock
igneous
Blue Lace Agate
Cryptocrystalline Quartz (SiO2) with trace minerals
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Pinkish-Orange Variety)
Crystalline Silicon Dioxide (SiO2)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Massive Quartz with Host Rock
Silicon Dioxide (SiO2)
mineral
Chert (Jasper/Flint Pebble)
Microcrystalline quartz (SiO2)
sedimentary
Quartz / Quartzite
Silicon Dioxide (SiO2)
Mineral / Metamorphic
Green Aventurine (Green Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Quartz (Quarzite or Massive Quartz vein)
Silicon Dioxide (SiO2)
metamorphic
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Gneiss Pebble
Gneiss (High-grade metamorphic rock)
metamorphic
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Chrysocolla in Jasper (Chryso-Jasper)
Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Schist
Mica Schist
metamorphic