Basalt with Quartz Veins
Amygdaloidal Basalt (matrix) with Crystalline SiO2 (veins)
Category
Browse mineral with metamorphic or igneous host specimens identified by the Rock Identifier community.
Basalt with Quartz Veins
Amygdaloidal Basalt (matrix) with Crystalline SiO2 (veins)
Calcite on Host Rock
Calcium Carbonate (CaCO3)
Gold Mineral
Native Gold (Au)
Rose Quartz
Silicon dioxide (SiO2) with traces of titanium, iron, or manganese
Schist
Schist
Potassium Feldspar
Orthoclase (KAlSi3O8)
Nuummite
Nuummite (Ortho-amphibole rock, primarily Anthophyllite and Gedrite)
Quartz Crystal on Matrix
Silicon Dioxide (SiO2)
Quartz-filled Basalt Geode
Amygdaloidal Basalt with Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz Vein on Matrix
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite / Ca5(PO4)3F
Gemstones (Emerald and Yellow Topaz or Citrine)
Beryl (Be3Al2Si6O18) and Quartz (SiO2) or Topaz (Al2SiO4(F,OH)2)
White Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Muscovite Mica
Muscovite [KAl2(AlSi3O10)(OH)2]
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Rough Citrine Quartz
Citrine (Silicon Dioxide, SiO2 with iron impurities)
Agate
Agate (a cryptocrystalline variety of Quartz, SiO₂)
Greenstone
Metabasalt / Chlorite Schist
Gneissic Schist
Gneiss-schist (Metamorphic rock)
Biotite Schist
Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
Granitic Pegmatite
Granitic Pegmatite (principally Quartz, Potassium Feldspar, and Mica)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Pyrite in Quartzite/Graphite Matrix
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Moonstone (Feldspar)
Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Moonstone (Tumbled)
Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Albite
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Peacock Ore
Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)
Quartz with Iron Stains
Silicon Dioxide (SiO2) with FeOx inclusions