Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary (Chemically Precipitated)
Browse sedimentary (chemically precipitated) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Chemically Precipitated) in the encyclopedia
View all →
Quartz (Milky or Citrine-tinted)
Silicon Dioxide (SiO2)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
mineral
Sulfur
Native Sulfur (S8)
mineral
Yellow Calcite (Banded Calcite)
Calcium Carbonate (CaCO3)
mineral
Chalcedony Nodule (Carnelian/Agate)
Chalcedony (Silicon Dioxide, SiO2)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Orange Calcite (Cleavage Rhomb)
Calcite (Calcium Carbonate, CaCO3)
mineral
Chert
Cryptocrystalline Quartz (SiO2)
sedimentary
Fordite
Anthropogenic paint-rock
mineraloid (human-made geological specimen)
Quartzite (River Cobble)
Quartzite (primarily SiO2)
metamorphic
Chert (Flint)
Silicon dioxide (microcrystalline quartz, SiO2)
sedimentary
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
sedimentary
Bituminous coal
Coal; predominantly vitrinite and inertinite macerals composed chiefly of carbon, hydrogen, oxygen, nitrogen, and sulfur
sedimentary
Red Jasper (beads)
Silicon Dioxide (SiO2) with iron inclusions
Sedimentary Rock
Tumbled honey calcite
Calcite (calcium carbonate, CaCO₃)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Chalcopyrite
CuFeS2 (Copper Iron Sulfide)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Iron Hydroxide impurities
mineral
Jasper (Red/Carnelian Agate)
Silicon Dioxide (SiO2) with Iron Oxide impurities
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Common Opal
Hydrated Amorphous Silica (SiO2·nH2O)
mineraloid
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Pink Chalcedony
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Chert)
Microcrystalline Quartz (SiO2)
mineral