Jasper Agate
Silicon dioxide (SiO2)
Category
Browse igneous or sedimentary (anthropogenic modification) specimens identified by the Rock Identifier community.
Jasper Agate
Silicon dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Rose Quartz with Schist Matrix
Silicon Dioxide (SiO2) with Mica-Schist
Amethyst (Rough)
Silicon Dioxide with iron impurities (SiO2)
Moonstone with Black Tourmaline
Orthoclase (KAlSi3O8) with Schorl inclusions
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
Morganite (Pink Beryl)
Beryllium aluminum silicate Be3Al2(SiO3)6
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Purple Lepidolite with Quartz
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
Lavender Quartz (appearing as beads) and Druzy Quartz
Silicon Dioxide (SiO2)
Sodalite
Sodalite [Na8(Al6Si6O24)Cl2]
Rose Quartz
Silicon dioxide (SiO2) with trace titanium, manganese, or iron
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Granite
Granite (a felsic intrusive igneous rock composed primarily of quartz, feldspar, and mica)
Granite Cobble/Pebble
Granite
Sea Glass (White/Clear)
Amorphous Silica (Alkali-Lime-Silica Glass), SiO2 + Na2O + CaO
Geode (Unopened)
Siliceous Septarian Concretion / Geode (SiO2)
Gastropod Fossil (Internal Mold)
Phylum Mollusca, Class Gastropoda (Steinkern)
Granite River Pebble
Phaneritic Felsic Igneous Rock (Granite)
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Pink Granite
Phaneritic Felsic Igneous Plutonic Rock
Pink Granite
Phaneritic intrusive igneous rock (Felsic)
Diorite
Diorite (Intermediate intrusive igneous rock)
Diorite
Diorite (intermediate intrusive igneous rock)
Granite
Granite (Phaneritic Acidic Igneous Rock)
Granite
Phaneritic Felsic Igneous Rock (Granite)
Basalt (with possible weathering or secondary mineral crust)
Basalt (Aphanitic Mafic Igneous Rock)
Pink Granite (Crystalline Granite)
Igneous Intrusive Rock (Felsic Plutonic)
Diorite (River Rock/Cobble)
Intermediate Plutonic Igneous Rock (Diorite)
Granite
Intrusive Phaneritic Felsic Igneous Rock
Granite
Granite (Phaneritic intrusive igneous rock)
Basalt with Quartz Vein
Mafic Igneous Rock (SiO2 filling)
Diorite
Diorite (Intermediate intrusive igneous rock)
Basalt (with possible mineral veining)
Basalt (Aphanitic Mafic Igneous Rock)
Vesicular Basalt with Amygdaloidal Infill
Basalt (Mafic Extrusive Igneous Rock)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)