Granite (Background) and Quartzite/River Pebble (Foreground Heart)
Phaneritic Felsic Igneous Rock (Granite background)
igneous
Category
Igneous
Browse igneous specimens identified by the Rock Identifier community.
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Basalt River Pebble
Basalt (fine-grained mafic igneous rock)
igneous
Porphyritic Andesite or Dacite (tumbled pebble)
Porphyritic Igneous Rock (likely Andesite or Dacite)
Igneous
Pink Granite
Granite (Phaneritic felsic intrusive igneous rock)
igneous
K2 Azurite Granite / K2 Stone
Granite (igneous rock) with Azurite inclusions (mineral)
igneous
Vesicular Basalt
Vesicular Basalt (Aphanitic Mafic Igneous Rock)
igneous
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Granite
Phaneritic Acidic Igneous Rock (Granite Group)
igneous
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Granodiorite
Granodiorite (calc-alkaline phaneritic igneous rock)
igneous
Basalt with Calcite Veining
Aphanitic Mafic Igneous Rock (Basalt) with CaCO3
igneous
Basalt-Amugydule (Amygdaloidal Basalt)
Aphanitic Mafic Igneous Rock with Vesicle Infillings
igneous
Quartz crystals on Basalt
SiO2 (Quartz) on Mafic Igneous Rock (Basalt)
igneous
Scoria (Lava Rock)
Scoria (highly vesicular extrusive igneous rock)
igneous
Basalt (Stream-worn Cobble)
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Granite
Phaneritic Plutonic Igneous Rock (Rich in SiO2)
igneous
Obsidian
Extrusive igneous volcanic glass (rich in SiO2)
igneous
Basalt River Pebble
Mafic Igneous Rock (Fine-grained Basalt)
igneous
Scoria (Lava Rock)
Scoria (Extrusive Igneous Rock / Mafic Silicates)
igneous
Pink Granite
Granite (Phaneritic Igneous Rock, primarily SiO2)
igneous
Basalt with Iron Oxidation
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Basalt
Basalt (Phaneritic/Aphanitic Mafic Igneous Rock)
igneous
Vesicular Basalt
Extrusive Mafic Igneous Rock (Vesicular Basalt)
igneous
Vesicular Basalt (or Scoria)
Basalt (Aphanitic-Vesicular Mafic Igneous Rock)
igneous
Pegmatite
Coarse-grained Igneous Rock (Granitic Pegmatite)
igneous
Basalt with Iron Oxidation
Vesicular Basalt (Aphanitic Mafic Igneous Rock)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral
Diamond
Native Carbon (C)
mineral
Quartz with Mica/Chlorite inclusions
Silicon Dioxide (SiO2) with phyllosilicate inclusions
igneous/metamorphic mineral specimen
Leopard Skin Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
gemstone
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz and Citrine
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Blue Sapphire (Faceted)
Corundum (Al2O3)
gemstone
Rough White Zircon
Zircon (Zirconium Silicate, ZrSiO4)
mineral
Labradorite
Labradorite (a calcium-enriched sodic plagioclase feldspar)
mineral
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral