Granite (Pink/Red)
Phaneritic Plutonic Felsic Rock (major minerals: Quartz, Orthoclase Feldspar, Plagioclase Feldspar)
igneous
Category
Sedimentary (Secondary Mineral) Within Igneous
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
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Basalt
Mafic volcanic rock (various silicate minerals including Pyroxene and Plagioclase)
igneous
Tumbled Amethyst
Quartz (Silicon Dioxide, SiO2)
gemstone
Brown Sandstone
Arenite (primarily Quartz and Feldspar, with Iron Oxide cement)
sedimentary
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (with possible Feldspar inclusions)
Silicon Dioxide (SiO2)
mineral
Chert (Septarian or Nodular variety)
Microcrystalline Quartz (SiO2)
sedimentary
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Olivine (Peridotite / Dunite Pebble)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Milky Variety)
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (KAlSi3O8)
mineral
Quartz River Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Mineral
Morganite (Pink Beryl)
Beryllium aluminum silicate Be3Al2(SiO3)6
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone (Grey)
Feldspar (variety Orthoclase/Adularia) with the formula (K,Na)AlSi3O8
mineral
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Rose Quartz
SiO2 (Silicon Dioxide with trace inclusions of dumortierite)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral / Sedimentary occurrence
Limestone with Calcite Veining
Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Vanadinite
Pb5(VO4)3Cl
mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Quartz Geode (Cracked)
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode
mineral
Celestite (Celestine) Geode
Strontium Sulfate (SrSO4)
mineral
Basalt with Quartz Veins
Amygdaloidal Basalt (matrix) with Crystalline SiO2 (veins)
igneous
Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
gemstone
Basalt
Basalt (Mafic volcanic rock)
igneous
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Dalmatian Stone
Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock
igneous
Amethyst
Amethyst (Silicon Dioxide, SiO2 with Iron impurities)
mineral
Amethyst (Quartz)
Amethyst (Silicon Dioxide with Iron impurities), SiO2
mineral
Quartz Vein / Quartz Matrix
Silicon Dioxide (SiO2)
mineral
Blue Quartz (Dumortierite Quartz)
Silicon Dioxide (SiO2) with Dumortierite inclusions (Al7BO3(SiO4)3O3)
mineral
Limonite (also known as Yellow Ochre or Brown Hematite)
Limonite (Hydrated iron oxide-hydroxide, FeO(OH)·nH2O)
Mineral
Granite
Granite (Phaneritic Igneous Rock)
igneous
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral