Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Category
Igneous
Browse igneous specimens identified by the Rock Identifier community.
Learn about Igneous in the encyclopedia
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Crushed Stone (Likely Granite or Diabase)
Intrusive Igneous Rock (Granitoid/Gabbroid)
igneous
Granite Water-Worn Pebble
Intermediate to Felsic Phaneritic Igneous Rock
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Basalt Pebble
Basalt (Mafic Extrusive Igneous Rock)
igneous
Basalt (River Stone)
Basalt (Mafic Extrusive Igneous Rock)
igneous
Diorite
Diorite (an intermediate intrusive igneous rock)
igneous
Granodiorite Pebble
Granodiorite (Intermediate intrusive igneous rock)
igneous
Diorite
Phaneritic intermediate intrusive igneous rock
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Milky Quartz (Water-worn pebble/nodule)
Quartz (Silicon Dioxide - SiO2)
mineral
Peridot (Olivine)
Olivine (Magnesium Iron Silicate), (Mg,Fe)2SiO4
mineral
Arsenopyrite in Quartz/Host Rock
Arsenopyrite (FeAsS)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Greenstone with Epidote or Quartz Vein
Epidiorite or Metabasalt (composed largely of Chlorite, Epidote, and Amphibole)
metamorphic
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Hematite
Iron (III) Oxide (Fe2O3)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
gemstone
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Mixed Mineral Collection (with Titanium Aura Quartz)
Silicon Dioxide (SiO2) with metallic coatings and various silicates
mineral
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Citrine or Yellow Quartz
Quartz (SiO2) with iron impurities
mineral
Banded Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Blue Zircon
Zircon (Zirconium Silicate), ZrSiO4
gemstone
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Carnelian Agate
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Black Tourmaline in Quartz Matrix
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Labradorite
Labradorite (Ca, Na)(Al, Si)4O8
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral