Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Shale
Shale (Lutite)
Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)
Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide cement)
Sandstone
Arenite (SiO2 based)
Limonite (Iron Stone/Ocher)
Limonite (FeO(OH)·nH2O)
Quartz Geode
Silicon Dioxide (SiO2)
Chalcopyrite
Chalcopyrite (CuFeS2)
Jasper
Silicon dioxide (SiO2)
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
Granitic Pegmatite with Schorl Tourmaline
Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
Amethyst (Purple), Sulfur (Yellow), and Blue Apatite
SiO2 (Quartz), S (Native Sulfur), Ca5(PO4)3(F,Cl,OH) (Apatite Group)
Quartz (likely)
Quartz (SiO2 - Silicon Dioxide)
Rose Quartz
SiO2 (Silicon Dioxide)
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
Muscovite Mica
KAl2(AlSi3O10)(F,OH)2
Quartz (Citrine or Smoky variant)
Silicon Dioxide (SiO2)
Olivine in Basalt matrix
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
Quartz in Basalt (Xenocryst)
Silicon Dioxide (SiO2) in Mafic Igneous Volcanic Rock
Shale (with Iron Oxide staining)
Fissile Mudstone (primarily Quartz and Clay minerals)
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix
Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
Banded Sandstone (Zebra Stone)
Arenite with Iron Oxide Banding (Liesegang rings)
Granite
Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)
Diorite
Diorite (Intermediate intrusive igneous rock)
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
Sedimentary Breccia
Clastic Breccia (CaCO3/SiO2 matrix)
Sandstone (Ferruginous)
Arenite (Fe-oxide cemented)
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Diamond
Native Carbon (C)
Granite
Granite (Mainly Quartz SiO2 and Feldspar KAlSi3O8)
Shale (sub-type: Carbonaceous Shale)
Lutaceous Sedimentary Rock
Granite
Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)
Amygdaloidal Basalt with Secondary Minerals
Basalt containing secondary mineralization (likely Chlorite, Celadonite, or Zeolites)
Amazonite
Amazonite (KAlSi3O8) - a variety of Microcline Feldspar
Ironstone Concretion / Limonite-stained Siltstone
Ironstone (primarily Limonite FeO(OH)·nH2O and Siltstone)
Green Schist
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
Black Pearl (Tahitian or Irradiated Type)
Organic gemstone (Calcium Carbonate with Conchiolin Binding)
Magnetite
Magnetite (Fe3O4)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)