Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
mineral (synthetic/man-made coating)
Category
Mineral Based Composite
Browse mineral based composite specimens identified by the Rock Identifier community.
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Fossilized Shark Tooth
Fossilized Elasmobranchii tooth (likely Odontaspis or Carcharias)
sedimentary
Basalt
Basalt (composition of plagioclase feldspar and pyroxene)
igneous
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Rough Green Sapphire (Corundum)
Corundum (Al2O3 - Aluminum Oxide with trace elements)
mineral
Biotite (Mica)
Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2
mineral
Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Basalt with Quartz Vein
Mafic Igneous Rock (SiO2 filling)
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Graphite
Graphite (Native Carbon), Formula: C
Metamorphic
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Lepidolite
Lepidolite - K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Fe/Mn/Mg)
mineral
Sandstone (likely Arkosic or Quartzose)
Sandstone (SiO2 with inclusions)
sedimentary
Wishing Stone (Basalt with Quartz Vein)
Basalt containing a microcrystalline quartz (SiO2) or calcite vein
igneous
Granite
Phaneritic Felsic Igneous Rock (primarily Quartz, Alkali Feldspar, and Plagioclase)
igneous
Sandstone (Quartz Arenite)
Sandstone (SiO2 with possible mineral cements)
sedimentary
Titanium Aura Quartz (Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2)
mineral
Granitoid (Granite/Gneiss)
Granitoid silicate rock, primarily quartz and feldspar
igneous/metamorphic
Basalt with Calcite Veining
Aphanitic Mafic Igneous Rock (Basalt) with CaCO3
igneous
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Mn/Fe/Chlorite)
mineral
Mica (specimen appears to be Muscovite or Phlogopite)
Phyllosilicate mineral; Muscovite: KAl2(AlSi3O10)(F,OH)2
Mineral (Found in Igneous and Metamorphic rocks)
Muscovite Mica
Muscovite: KAl2(AlSi3O10)(OH)2
mineral
Chert (Mudstone)
Microcrystalline Quartz (SiO2)
sedimentary
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si)4O10(F,OH)2)
mineral
Quartz with Muscovite Mica
SiO2 with KAl2(AlSi3O10)(OH)2
mineral group
Mica Schist
Schist (Crystalline metamorphic rock)
metamorphic
Greenstone
Metabasalt / Chlorite-Epidote Schist
metamorphic
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
mineral
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Heat-Treated Citrine (Amethyst Cathedral with Agate inclusions)
Silicon Dioxide (SiO2) with iron impurities
mineral
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Vesicular Basalt (Amygdaloidal)
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Gneiss (Granitic Gneiss)
Gneiss (from German Gneis, related to 'spark')
metamorphic
Vesicular Basalt (Lava Rock)
Aphanitic Mafic Igneous Rock
igneous