Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral, often found as detrital grains in sedimentary rocks
Category
Mineral (Found In Igneous And Metamorphic Rocks)
Browse mineral (found in igneous and metamorphic rocks) specimens identified by the Rock Identifier community.
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Seraphinite
Clinochlore (Mg,Fe)5Al(AlSi3O10)(OH)8 - specific variety for Seraphinite due to its fibrous inclusions and chatoyancy.
Mineral
Stichtite in Serpentine (Atlantisite)
Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)
Metamorphic
Eudialyte in Syenite (Dragon Blood Stone)
Na15Ca6(Fe,Mn)3Zr3(Si25O73)(O,OH,H2O)3(Cl,OH)2
igneous
Rough Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Blue Lace Agate
Cryptocrystalline Quartz (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (Purple Quartz); formula: SiO2 (Silicon Dioxide)
mineral
Green Aventurine
Aventurine (Silicon Dioxide with Fuchsite inclusions - SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Hematite
Ferric oxide (Fe2O3)
mineral
Aventurine (Green)
Silicon Dioxide (Quartz) with inclusions typically of Fuchsite; SiO2
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Milky Quartz with inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite (River Pebble)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartz / Quartz Geode fragment
Silicon Dioxide (SiO2)
mineral
Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
metamorphic (man-made/anthropogenic)
Graphite
Graphite (Native Carbon, C)
metamorphic
Granite
Granite (Felsic Plutonic Rock)
igneous
Agate (Moss or Plume Agate variety)
Silicon Dioxide (SiO2)
mineral
Chalcedony (specifically Agate or Carnelian variety)
Cryptocrystalline Silica (SiO2)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Peach Aventurine
Quartz variety (SiO2 + Hematite/Goethite inclusions)
mineral
Moonstone
Adularia or Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8), specifically with lamellar exsolution of albite and orthoclase.
mineral
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Blue Quartzite
Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)
metamorphic
Green Fluorite (Fluorite Sphere)
Calcium Fluoride (CaF2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Fluorite (often called Rainbow Fluorite or Purple-Green Fluorite)
Calcium Fluoride (CaF2)
mineral