Basalt with Quartz/Calcite Veins
Basalt (Aphanitic Mafic Volcanic Rock) with Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) inclusions
igneous
Category
Mineral (Variant Of Quartz)
Browse mineral (variant of quartz) specimens identified by the Rock Identifier community.
Polychrome Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Granite Pebble (River Rock)
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Coarse Sand Grain / Lithic Fragment
Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)
sedimentary
Citrine
Crystalline Quartz (SiO2) with iron impurities
mineral
Granite
Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase)
igneous
Gneiss
Gneiss
metamorphic
Granite
Granite (Phaneritic Quartz-Feldspar intrusive rock)
Igneous
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Clear Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Fluorite Tower
Calcium Fluoride (CaF2)
mineral
Dalmation Stone (often called Dalmatian Jasper)
Antiperthite-rich Microgranite
igneous
Quartz (Milky/Yellowish Pebble)
Silicon Dioxide (SiO2)
mineral
Pyrite (on host rock)
Iron Sulfide (FeS2)
mineral
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Pegmatite
Granitic Pegmatite
igneous
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Chlorite Included Quartz
Silicon Dioxide (SiO2) with Chlorite (Mg,Fe,Li)6AlSi3O10(OH)8
mineral
Basalt with Quartz Vein
Basalt (SiO2 vein inclusion)
igneous
Chakra Stone Tower (Composite Multi-Mineral)
Crystalline Silicon Dioxide composite (SiO2) with various inclusions
mineral
Tumbled Stone Collection (featuring Tiger's Eye, Rose Quartz, and Moss Agate)
Mixed Silicates and Oxides (predominantly SiO2 group minerals)
mineral
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
River Cobble (likely Sandstone or Siltstone type)
Sandstone or Siltstone (common rock types that form river cobbles)
Sedimentary Rock (specifically a clastic sedimentary rock formed into a cobble)
Sandstone Concretion with Quartz Center
Sedimentary Clastic Rock (SiO2 matrix with Quartz core)
sedimentary
Yellow Aventurine
Silicon Dioxide (SiO2) with inclusion of Mica
Mineral (Variety of Quartz)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz (Orangey-white variety)
Silicon Dioxide (SiO2)
mineral
Rough Quartz (with potential Host Rock)
Silicon Dioxide (SiO2)
mineral
Quartz Geode (partially formed/chalcedony with iron staining)
Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides
Mineral/Sedimentary Rock Feature
Quartzite
Quartzite (SiO2)
metamorphic
Red Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
sedimentary
Sandstone
Arenite (SiO2 + various cementing minerals)
sedimentary
Black Marble
Recrystallized Calcite (CaCO3)
metamorphic
Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Blue Tiger's Eye
Crocidolite (fibrous riebeckite) silicified to Quartz (SiO2)
Mineral
Sandstone (with Concretion)
Arenite / Quartzose Sandstone
sedimentary
Iron-stained Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3/FeO(OH))
mineral
Red Jasper with Quartz Veining
Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions
sedimentary
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
mineral