Migmatite
Migmatite (Mixed Rock)
Category
Browse metamorphic specimens identified by the Rock Identifier community.
Migmatite
Migmatite (Mixed Rock)
Prehnite
Ca2Al(AlSi3O10)(OH)2
Epidote
Epidote - {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Strawberry Quartz (Aventurine)
Silicon Dioxide with Hematite/Lepidocrocite inclusions (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Strawberry Quartz
Quartz with Hematite inclusions (SiO2 + Fe2O3)
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
Rough Quartz (Smoky or Citrine variant)
Silicon Dioxide (SiO2)
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Arsenopyrite in Quartz/Host Rock
Arsenopyrite (FeAsS)
Tumbled Moonstone
Feldspar (Orthoclase/Albite), KAlSi3O8
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Citrine
Silicon dioxide (SiO2)
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
Dumortierite Quartz
Dumortierite (Al7BCuO15)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
Apatite
Fluorapatite (Ca5(PO4)3F)
Note: Image shows a biological specimen (Rat), not a rock. Representative geological equivalent: Galena (due to lead-grey colors in fur).
Galena (PbS)
Quartz (Granular)
Silicon Dioxide (SiO2)
Serpentine
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
Labradorite
(Ca,Na)(Al,Si)4O8
Jadeite Jade
NaAlSi2O6 (Sodium Aluminum Silicate)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Citrine Quartz
Silicon Dioxide (SiO2)
Tiger's Eye, Hematite, and Black Obsidian Bracelet
SiO2 (Tiger's Eye), Fe2O3 (Hematite), and 70-75% SiO2 (Obsidian)
Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Strawberry Quartz (Quartz with Hematite inclusions)
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
Dearest Ring (Gemstones)
Mixed Gemstones: Diamond (C), Emerald (Be3Al2Si6O18), Amethyst (SiO2), Ruby (Al2O3), Sapphire (Al2O3), Topaz (Al2SiO4(F,OH)2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Yellow Aventurine
Silicon Dioxide (SiO2) with inclusions