Basalt Pebble
Extrusive Igneous Rock
igneous
Category
Igneous (Anthropogenic)
Browse igneous (anthropogenic) specimens identified by the Rock Identifier community.
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Quartz pebble
Silicon dioxide (SiO2)
mineral
Granite
Granite
igneous
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Mica
Mica group (often Muscovite or Biotite)
mineral
Clear Quartz
SiO2 (Silicon Dioxide)
gemstone
Yellow Sapphire or Citrine
Al2O3 (Corundum) or SiO2 (Quartz)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (SiO2)
mineral
Quartz with Epidote
Silicon dioxide (SiO2) with Calcium aluminum iron silicate (Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))
mineral
Pink Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Mica
SiO2 (Quartz) with Potassium aluminum silicate (Muscovite)
Mineral
Granite
Granite
Igneous
Granite and Igneous Rock Collection
Intrusive igneous rock / Granitoid
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Cloudy Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite in Quartz
Na8(Al6Si6O24)Cl2 (Sodalite) / SiO2 (Quartz)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Basalt
Extrusive Igneous Rock
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
gemstone
Labradorite
Labradorite ((Ca,Na)(Al,Si)4O8)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Granite
igneous
Granite
Granite (Plutonic Igneous Rock)
igneous
K-Feldspar Granite Fragment
Felsic Plutonic Rock (Granite)
igneous
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
igneous
Granite
Plutonic Igneous Rock (composed typically of SiO2, Al2O3, K2O, Na2O, CaO)
igneous
Dalmation Jasper (Dalmation Stone)
Perthitic feldspar-quartz-amphibole rock
igneous
Porphyritic Basalt (with Augite Crystals)
Porphyritic Mafic Volcanic Rock (Fe-Mg Silicates)
igneous
Granite
Plutonic Igneous Rock
igneous
Porphyritic Granite (Pink Granite)
Granite (plagioclase, alkali feldspar, quartz, biotite)
igneous
Weathered sandstone fragment
Clastic sandstone, likely quartz-rich (quartz arenite or arkose)
sedimentary
Granite Pebble
Granitoid (Plagioclase, Alkali feldspar, Quartz, Biotite/Amphibole)
igneous
Granite Boulder
Phaneritic Felsic Igneous Rock
igneous
Pink Granite Pebble
Granite
igneous
Pink Granite
Phaneritic Igneous Rock (Quartz-Feldspar-Mica)
igneous
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral