Bull Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Igneous And Mineral
Browse igneous and mineral specimens identified by the Rock Identifier community.
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Clear Quartz Crystal (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz (with trace inclusions)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Chlorite/Moss Infusions
Silicon Dioxide (SiO2)
mineral
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Labradorite
Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Obsidian
Extrusive igneous volcanic glass (rich in SiO2)
igneous
Greenstone
Metabasalt (Greenstone)
metamorphic
Quartz (Clear/Crystalline)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2)
sedimentary
Granitic Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Rose Quartz Chips
Quartz (Silicon Dioxide - SiO2)
mineral
Granite
Phaneritic Felsic Plutonic Rock
igneous
Granite
Granite
igneous
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)
igneous
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Basalt Pebble
Basaltic Igneous Rock
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Amethyst (Tumbled)
Silicon Dioxide (SiO2 with iron impurities)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Amethyst (as seen in jewelry)
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst (Pale/Light Variety)
Quartz (Silicon Dioxide) with Iron impurities - SiO2
mineral
Granite
Granite (Phaneritic igneous rock)
igneous
Gneiss
Gneiss
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Smoky Quartz
Smoky Quartz (SiO2)
mineral
Biotite / Black Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Beach Pebble (Basalt / Greywacke)
Basalt (or fine-grained Sedimentary Greywacke)
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Basalt with Quartz Vein
Mafic volcanic rock with hydrothermal SiO2 filling
igneous
Dalmatian Stone (often called Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite (formerly believed to be Jasper)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Granite Cobble
Granite (Phaneritic igneous rock)
igneous