Turquoise in Matrix
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Category
Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks
Browse mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks specimens identified by the Rock Identifier community.
Basalt (Crushed Stone Aggregate)
Mafic Volcanic Basalt (Major Minerals: Plagioclase Feldspar, Pyroxene, Olivine)
igneous
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite)
metamorphic
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
White Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Aquamarine
Aquamarine (Beryl variety) - Be3Al2(Si6O18)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz or possibly Jasper/Chert. Looks like a tumbled or water-worn stone.
SiO2 (Silicon Dioxide)
Mineral or Sedimentary (if chert)
Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
metamorphic
Sandstone (with potentially metamorphic or basaltic bands)
Arenite / Lithic Wacke
sedimentary
Mica Schist
Mica Schist (primarily Muscovite and Biotite composition)
metamorphic
Sunstone
Oligoclase or Andesine (Labradorite) Feldspar (Na,Ca)(Si,Al)4O8
mineral
Serpentine
Antigorite, Lizardite, or Chrysotile; (Mg, Fe)3Si2O5(OH)4
metamorphic
Ironstone Concretion (Moqui Marble type)
Ferruginous Concretion (Fe2O3 / FeO(OH))
sedimentary
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Botryoidal Agate / Chalcedony Geode
Silicon Dioxide (SiO2)
mineral
Jade (likely Jadeite)
Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)
Mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Gneiss (with iron staining)
Gneiss
metamorphic
Smoky Quartz
Smoky Quartz (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Citrine
Silicon Dioxide (SiO2) - Yellow Quartz variety
mineral
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Quartz Pebble (with probable iron staining)
Silicon dioxide (SiO2)
mineral
Epidote in Quartz (Unakite-like specimen)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Quartz (SiO2)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Nuummite
Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)
metamorphic
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Mineral
Fluorite (Blue)
Calcium Fluoride (CaF2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Schist
Mica Schist
metamorphic
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (specifically Milky/Gray Quartz)
Silicon Dioxide (SiO2)
mineral