Moonstone
Orthoclase Feldspar (KAlSi3O8)
Category
Browse metamorphic or igneous with mineral inclusion specimens identified by the Rock Identifier community.
Moonstone
Orthoclase Feldspar (KAlSi3O8)
Biotite (Black Mica)
Biotite (K(Mg,Fe++)3AlSi3O10(OH,F)2)
Citrine or Yellow Quartz
Silicon Dioxide (SiO2) with iron impurities
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Quartz (likely a form of massive or vein quartz)
Quartz (SiO₂)
Grey River Stone (Gneiss/Schist mix)
Foliated Metamorphic Rock (variable mineral formula)
Pink Quartz (Inclusion-filled)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Snowflake Obsidian
Volcanic Glass (SiO2 + impurities)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Amygdaloidal Rhyolite
Rhyolite (felsic volcanic rock) with amygdules
Basalt
Extrusive mafic igneous rock
Granite
Phaneritic Igneous Rock (Granite)
Milky Quartz (Water-worn pebble)
Quartz (Silicon Dioxide, SiO2)
Green Calcite
Calcite (Calcium Carbonate, CaCO3)
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
Emerald (Beryl)
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Corundum (Sapphire in Host Rock)
Corundum (Aluminum Oxide, Al2O3)
White Quartz (Carved or Tumbled)
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2 with iron inclusions)
Milky Quartz
Silicon Dioxide (SiO2)
White Quartz Pebble
Silicon Dioxide (SiO2)
Granite Pebble (Salt and Pepper Granite)
Felsic Intrusive Igneous Rock (Granite)
Granite
Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase)
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
Dalmatian Jasper (Dalmatian Stone)
Dalmatian Stone (primarily Feldspar, Quartz, and Arfvedsonite/Tourmaline)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Milky and Citrine-type Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Mahogany Obsidian
Volcanic Glass (SiO2 + Fe2O3)
Muscovite Mica
Muscovite (KAl₂(AlSi₃O₁₀)(F,OH)₂))