Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Category
Mineral Group
Browse mineral group specimens identified by the Rock Identifier community.
Azurite Malachite (Mixed)
Azurite-Malachite; Azurite: Cu3(CO3)2(OH)2 / Malachite: Cu2CO3(OH)2
mineral
Jade (likely Jadeite)
Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)
Mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
Igneous
Granitic Pegmatite with Schorl Tourmaline
Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)
igneous
Native Copper
Native Copper (Cu)
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Native Copper in Basalt
Cuprum (with Host Basalt)
igneous
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Diorite (Salt and Pepper Rock)
Diorite
igneous
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
sedimentary
Gneiss
Gneiss
metamorphic
Specular Hematite
Hematite (Fe2O3)
mineral
Pyrite on Quartz matrix
Iron Disulfide (FeS2) on Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Amygdaloidal Basalt with Epidote/Chlorite
Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))
igneous
Banded Gneiss
Gneiss (pronounced 'nice')
metamorphic
Limonite (Ironstone)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
mineral
Limonite Sandstone
Ferruginous Sandstone (Hydrated Iron Oxide)
sedimentary
Epidote
Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))
mineral
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Limonite (Yellow Ochre)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
mineral
Amygdaloidal Basalt with Secondary Minerals
Basalt containing secondary mineralization (likely Chlorite, Celadonite, or Zeolites)
igneous
Limonite
Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Greisen
Greisen
Metamorphic
Greisen (Quartz-Muscovite-Turretine Rock)
Greisen
Metamorphic Rock
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Nickel coin (U.S. currency)
Cupronickel (75% Copper, 25% Nickel alloy)
man-made alloy (metallic)
Boxwork Siderite or Sepatarian Nodule Weathering
Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment
sedimentary
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Fluorite with Quartz coating
Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
igneous
Peacock Ore
Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Granite
Phaneritic plutonic rock (Quartz, Alkali Feldspar, and Plagioclase)
igneous