Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2)
mineral
Category
Igneous
Browse igneous specimens identified by the Rock Identifier community.
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Quartz (Microcrystalline/Gravel)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
River Stone (River Pebble)
River Stone (Composition: primarily Quartzite, Chalcedony, and silicate minerals)
sedimentary
Chalcopyrite in Matrix
Chalcopyrite (CuFeS2)
mineral
Eudialyte
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Rose Quartz
Silicon dioxide (SiO2)
mineral
Quartz (Gray/Smoky Varieties)
Silicon Dioxide (SiO2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Slag (Industrial Byproduct)
Artificial silicate/iron byproduct
Mineral description (Anthropogenic material)
Soapstone / Steatite
Steatite (primarily Talc, Mg3Si4O10(OH)2)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Quartz / Common Gravel
Silicon Dioxide (SiO2)
mineral
Rose Quartz (Aura Quartz)
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Granite
Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)
igneous
Granite
Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)
igneous
Labradorite (tumbled)
Labradorite (a plagioclase feldspar mineral between anorthite and albite; chemical formula: (Ca,Na)(Si,Al)4O8)
Mineral
Biotite Mica
K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2
Mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Granite fragment
Granite (Felsic intrusive igneous rock)
igneous
Gabbro
Gabbro (mafic intrusive igneous rock)
igneous
Granite Water-worn Cobble
Felsic intrusive igneous rock (Phaneritic)
igneous
Gabbro
Gabbro (mafic intrusive igneous rock)
igneous
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Basalt pebble
Basalt (Mafic Extrusive Igneous Rock)
igneous
Granite
Granite (Felsic Intrusive Igneous Rock)
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Basalt (with possible minor veining)
Basalt (Mafic Extrusive Igneous Rock)
igneous
Gabbro
Gabbro (Mafic Intrusive Igneous Rock)
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Granite
Phaneritic plutonic igneous rock (Granite)
igneous
Vesicular Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous