Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
Category
Browse mineral with metamorphic or igneous host specimens identified by the Rock Identifier community.
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
Black Tourmaline (Schorl)
Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3(OH)4)
Tumbled Moonstone and Amazonite Chips
Orthoclase (KAlSi3O8) and Microcline (KAlSi3O8) of the Feldspar Group
Grey Agate (Banded Chalcedony)
Agate (Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (specifically Citrine or Yellow Quartzite pebble)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silica / Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Clear Quartz (Tumbled)
Quartz (Silicon Dioxide - SiO2)
Citrine Geode Fragment
Citrine (Silicon Dioxide with Iron Impurities), SiO2
Yellow Quartz (Citrine Quartz Pebble)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon dioxide (SiO2)
Amazonite (Amazon Stone)
Tectosilicate Microcline (KAlSi3O8)
Amethyst
Amethyst (Silicon Dioxide with iron impurities, SiO2)
Amethyst
SiO2 (Silicon Dioxide) - Purple variety of Crystalline Quartz
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with Iron impurities
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Greenstone
Metabasalt / Chlorite-Epidote Schist
Gneiss
Gneiss
Greenstone
Metabasalt / Chlorite Schist
Pyrite in Gossan
Iron Sulfide (FeS2) in Ferruginous Rock
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Citrine Quartz Crystal Cluster
Silicon Dioxide (SiO2) with iron impurities
Amethyst Quartz
Silicon Dioxide (SiO2)
Greenstone / Graywacke
Metagraywacke (Chlorite-grade schistose rock)
Quartz Geode (likely within Limestone or Dolomite matrix)
Quartz (SiO₂)
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
Jasper-Agate Breccia
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in sedimentary/volcanic host
Gneiss
Gneiss
Granite Gneiss
Gneiss (derived from granitic protolith)
Lapis Lazuli
Lapis Lazuli (Primary mineral: Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Quartz Geode in Sedimentary Matrix
Silicon Dioxide (SiO2) within a limestone/dolostone host
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Chert Geode or Nodule
Microcrystalline Quartz (SiO2)
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)