Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
Category
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
Milky Quartz
Silicon Dioxide (SiO2)
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Muscovite on Quartz (Mica host rock)
KAl2(AlSi3O10)(OH)2 (Muscovite) in SiO2 (Quartz)
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(F,OH)2
Sodalite
Na8(Al6Si6O24)Cl2
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Peach Moonstone
Orthoclase Feldspar (KAlSi3O8)
Quartz (Yellow/Citrine variety)
Crystalline Silicon Dioxide (SiO2)
Citrine Quartz Sphere
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3)
Ruby (set in a gold pendant)
Ruby (Variety of Corundum, Al2O3)
Greenstone (Greenschist)
Greenschist facies rock (containing chlorite, actinolite, and epidote)
Ruby in Zoisite
Anyolite (Calcium Aluminum Silicate with Aluminum Oxide impurities)
Quartz (Iron-stained or Ferruginous)
Silicon Dioxide (SiO2)
Apatite
Apatite Group (e.g., Fluorapatite Ca5(PO4)3F, Chlorapatite Ca5(PO4)3Cl, Hydroxylapatite Ca5(PO4)3(OH))
Rock Crystal Quartz
Quartz (SiO₂)
Soapstone / Steatite
Steatite (primarily Talc, Mg3Si4O10(OH)2)
Epidote (with Quartz and Feldspar)
Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)
Milky Quartz
Silicon Dioxide (SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Quartz
Silicon Dioxide (SiO2)
Diorite (Dalmatian Stone)
Phaneritic Plutonic Diorite
Garnet (likely Almandine, Pyrope, or a blend)
Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)
Greenschist
Greenschist (Actinolite-Chlorite Schist)
Tiger's Eye, Hematite, and Black Obsidian Bracelet
SiO2 (Tiger's Eye), Fe2O3 (Hematite), and 70-75% SiO2 (Obsidian)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Epidote (likely Unakite component or Epidosite)
Epidote (Ca2(Al2Fe)(SiO4)(Si2O7)O(OH))
Muscovite Mica
KAl2(AlSi3O10)(F,OH)2
Greenstone
Metabasalt / Chlorite Schist
Milky Quartz
Silicon Dioxide (SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Chalcopyrite
Chalcopyrite (CuFeS2)
Feldspar (Orthoclase)
Potassium Feldspar (KAlSi3O8)