Quartzite (Ferruginous)
Recrystallized Quartz (SiO2) with Iron Oxide inclusions
metamorphic
Category
Metamorphic Or Igneous With Mineral Inclusion
Browse metamorphic or igneous with mineral inclusion specimens identified by the Rock Identifier community.
Granitic Gneiss
Gneiss (Polymetamorphic Granitic Gneiss)
metamorphic
Green Aventurine (Green Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Quartzite Pebbler
Quartzite (primarily SiO2)
metamorphic
Yellow Quartzite (River Pebble)
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Black Obsidian
Obsidian (Amorphous volcanic glass, SiO2)
igneous
Jasper and Quartzite Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary/metamorphic
Calcite
Calcite (CaCO₃, Calcium Carbonate)
Mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Yellow Jade (Nephrite or Quartzite variety)
Ca2(Mg,Fe)5Si8O22(OH)2 (Nephrite) / SiO2 (Quartzite variant)
metamorphic
Fuchsite in Quartz (Aventurine Quartz)
K(Al,Cr)2(AlSi3O10)(OH)2 (Fuchsite) + SiO2 (Quartz)
metamorphic
Yellow Quartz (Citrine Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically a Banded Gneiss pebble)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Quartz (specifically Citrine or Yellow Quartzite pebble)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3(OH)4)
Mineral
Grey Agate (Banded Chalcedony)
Agate (Silicon Dioxide - SiO2)
mineral
Tumbled Moonstone and Amazonite Chips
Orthoclase (KAlSi3O8) and Microcline (KAlSi3O8) of the Feldspar Group
mineral
Clear Quartz (Tumbled)
Quartz (Silicon Dioxide - SiO2)
mineral
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Citrine Geode Fragment
Citrine (Silicon Dioxide with Iron Impurities), SiO2
mineral
Olivine (in Peridotite/Dunite form)
Magnesium Iron Silicate (Mg,Fe)2SiO4
igneous
Tektite (likely Indochinite)
Tektite (high-silica impact glass)
igneous
Banded Gneiss (River Cobble)
Gneiss (a high-grade metamorphic rock)
metamorphic
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
mineral
Peridot (likely, based on color and appearance)
Olivine group mineral, specifically (Mg,Fe)2SiO4 (Forsterite-Fayalite solid solution series)
Mineral
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
Mineral
Serpentine Jade (New Jade/Olive Jade)
Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite
Mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Soapstone
Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)
metamorphic
K2 Jasper (Beads)
Granodiorite with Azurite and Malachite
igneous
Pink Granite
Granite (Alkali-feldspar granite)
igneous
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Ruby
Corundum (Al2O3:Cr)
mineral
Black Tourmaline (Schorl)
NaFe3Al6(BO3)3Si6O18(OH)4
Mineral
Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Red Garnet
Pyrope-Almandine series (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)
mineral
Smoky Quartz (Vein Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic