Quartz (Rose Quartz / Quartz Pebble)
Silicon Dioxide (SiO2)
Category
Browse igneous and mineral specimens identified by the Rock Identifier community.
Quartz (Rose Quartz / Quartz Pebble)
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Schist
Schist
Quartz
SiO2 (Silicon Dioxide)
Rose Quartz
Silicon dioxide (SiO2) with traces of titanium, iron, or manganese
Citrine Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Dearest Ring (Gemstones)
Mixed Gemstones: Diamond (C), Emerald (Be3Al2Si6O18), Amethyst (SiO2), Ruby (Al2O3), Sapphire (Al2O3), Topaz (Al2SiO4(F,OH)2)
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Greenstone / Epidosite
Metamorphosed Mafic Igneous Rock (Epidote-Chlorite group)
Quartz (Drusy/Crystalline)
Silicon Dioxide (SiO2)
Granite
Phaneritic plutonic felsic rock (primarily Quartz, Feldspar, and Mica)
Blue Zircon
Zircon (Zirconium Silicate - ZrSiO4)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Amethyst
Silicon dioxide (SiO2) with iron impurities
Gneiss
Gneiss (High-grade metamorphic rock)
Quartz
Silicon dioxide (SiO2)
Quartz River Pebble
Silicon Dioxide (SiO2)
Rough Quartz (Milky / Clear Quartz)
Silicon Dioxide (SiO2)
Granite
Granite (a felsic intrusive igneous rock)
Limonite-stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide/Hydroxide (FeO(OH)·nH2O) staining
Snowflake Obsidian
Volcanic Glass with Cristobalite Inclusions
Granitic Pegmatite (Muscovite and Quartz)
Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)
Agate Geode
Silicon dioxide (SiO2) - Chalcedony
Quartz
Silicon Dioxide (SiO2)
Sunstone
Feldspar (variety Oligoclase or Labradorite), (Ca,Na)(Al,Si)4O8
Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with trace Iron (Fe)
Bornite
Bornite (Cu5FeS4)
Pegmatite with Schorl (Black Tourmaline) and Mica
Pegmatite (complex association of NaAlSi3O8, NaFe3Al6(BO3)3Si6O18(OH)4, and KAl2(AlSi3O10)(OH,F)2)
Amygdaloidal Basalt
Basalt with secondary mineral infilling
Granite
Granite (phaneitic intrusive igneous rock)
Granite
Granite (felsic intrusive igneous rock)
Pyrite
Iron Sulfide (FeS2)
Pyrite-rich Volcanic Rock
Iron Disulfide (FeS2) in Volcanic Matrix
Moonstone (Grey)
Feldspar (variety Orthoclase/Adularia) with the formula (K,Na)AlSi3O8
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Hematite
Iron (III) oxide (Fe2O3)
Pyrite
Iron Disulfide (FeS2)