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Foliated Metamorphic Rock (primarily composed of quartz, illite, chlorite, and micas)
Category
Browse metamorphic or igneous with mineral inclusion specimens identified by the Rock Identifier community.
Slate
Foliated Metamorphic Rock (primarily composed of quartz, illite, chlorite, and micas)
Chalcedony (River Stone)
Microcrystalline Quartz (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxides
Rhodonite
Rhodonite (Manganese silicate), (Mn,Fe,Mg,Ca)SiO3
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartzite and Jasper Pebbles
Quartzite (re-crystallized Quartz) and Cryptocrystalline Quartz (SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Basalt with Secondary Mineral Inclusions
Amygdaloidal Basalt (Mafic volcanic rock, primarily Augite and Plagioclase)
Green Aventurine (Green Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Granite
Granite (Felsic Plutonic Rock)
Ruby in Fuchsite (often sold as Ruby in Zoisite)
Corundum (Al2O3) in Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Rose Quartz
Rose Quartz (SiO₂)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Yellow Agate
Silicon Dioxide (SiO2)
Green Aventurine
Quartz variety (SiO2 with inclusions)
Dendritic Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides
Amazonite
Microcline (KAlSi3O8) with lead inclusions
Lepidolite and Rubellite (Pink Tourmaline)
Lepidolite [K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2] and Rubellite [Na(Li,Al)3Al6(BO3)3Si6O18(OH)4]
Mica
Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
Granite
Granite (Phaneritic igneous rock)
Mica Schist (Garnetiferous)
Garnet-Mica Schist
Blue Quartzite
Quartzite (primarily SiO2) with inclusions like Dumortierite or Crocidolite
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Biotite Schist
Biotite Mica Schist [K(Mg,Fe)3AlSi3O10(OH,F)2]
Obsidian
Volcanic Glass (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Dyed Dalmatian Jasper (Dalmatian Stone)
Perthitic Feldspar with Arfvedsonite inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Sunstone
Oligoclase (a variety of Plagioclase Feldspar) - (Na,Ca)(Si,Al)4O8
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Garnet Schist or Garnet-bearing Quartzite
Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)