Obsidian
Volcanic Glass (SiO2 + minor impurities)
igneous
Category
Sedimentary Or Igneous Associated Mineral
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Learn about Sedimentary Or Igneous Associated Mineral in the encyclopedia
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Plum Blossom Tourmaline
Tourmaline with Lepidolite (Na,Ca)(Li,Mg,Al)3Al6(BO3)3Si6O18(OH)4
igneous
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Pegmatite
Igneous Pegmatite (Quartz, Feldspar, Micas)
igneous
Basalt with Olivine and Scoria
Extrusive Igneous Rock
igneous
Quartz (vein quartz)
SiO2 (Silicon Dioxide)
Mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
mineral
Carnelian / Chalcedony
Silicon Dioxide (SiO2)
mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Kyanite (Blue Kyanite)
Kyanite (Al2SiO5)
mineral
Pyrite in Quartz
Iron Disulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sphalerite with Siderite and Pyrite
Zinc Sulfide (ZnS) with Iron Carbonate (FeCO3) and Iron Disulfide (FeS2)
mineral
Milky Quartz
Quartz (SiO2)
mineral
Carnelian
Silicon Dioxide (Chalcedony variety), SiO2
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Blue Kyanite in Quartz
Kyanite (Al2SiO5)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Red Jasper (Chalcedony)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Gabbro
Gabbro (Coarse-grained Mafic Igneous Rock)
igneous
Obsidian with Slate/Tuff
Volcanic glass (SiO2) with associated pyroclastic rock
igneous
Green Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Yellow Chalcedony
Silicon Dioxide (SiO2) - Chalcedony
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Amazonite
Microcline (KAlSi3O8) with trace lead (Pb)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Granite
Granite (composed primarily of Quartz SiO2 and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8))
igneous
Glauconite (Greensand)
Glauconite ((K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Greenstone
Greenschist / Meta-basalt
metamorphic
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Sandstone (with potentially high Feldspar/Arkose content)
Clastic sedimentary rock (SiO2 dominated)
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in Rhyolitic Matrix
igneous
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Granite
Granite (Mainly Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)
igneous
Orbicular Jasper
Silicon Dioxide (SiO2)
sedimentary
Native Copper (Penny specimen)
Native Copper (Cu)
mineral