Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Red Garnet (Pyrope or Almandine)
Magnesium aluminum silicate (Mg3Al2(SiO4)3) or Iron aluminum silicate (Fe3Al2(SiO4)3)
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide inclusions
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Smoky Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace impurities of Ti, Mn, or Fe
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Sodalite
Na8(Al6Si6O24)Cl2
Smoky Quartz
Silicon Dioxide (SiO2)
Citrine
Citrine (Silicon Dioxide - SiO2)
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Amazonite
K(AlSi3O8), Microcline (potassium feldspar)
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
Carnelian
SiO2 (Silicon Dioxide) - Carnelian Agate/Chalcedony
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Amethyst
Crystalline Quartz (SiO2) with iron impurities
Limonite Concretion (Ironstone)
Limonite (Hydrated Iron(III) Oxide-Hydroxide, FeO(OH)·nH2O)
Amygdaloidal Basalt
Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)
Smoky Quartz (with inclusions)
Silicon Dioxide (SiO2)
Granite
Phaneritic plutonic rock (composed mainly of SiO2, Al2O3, K2O, and Na2O)
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Granite
Phaneritic Plutonic Igneous Rock (Rich in SiO2)
Sandstone (Quartzose)
Arenite (Siliciclastic sedimentary rock)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
Granite
Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8), and Mica)
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Banded Onyx (Mexican Onyx / Travertine)
Calcite (CaCO3) - Banded Travertine
Black Obsidian
Volcanic Glass (SiO2 + impurities)
Sandstone
Arenite (composed primarily of SiO2)
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock