Schist
Mica Schist
Category
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
Schist
Mica Schist
Sandstone Moqui Marble (Concretion)
Iron oxide concretion (Hematite/Goethite and Quartz)
Orange Aventurine (Sunstone-style Quartzite)
Silicon Dioxide (SiO2) with Goethite or Hematite inclusions
Labradorite (specifically Larvikite beads)
Plagioclase Feldspar (Na,Ca)(Si,Al)4O8
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Schist
Mica Schist
Mica Schist with Pyrite
Muscovite/Biotite Schist with Iron Sulfide (FeS2)
Schist
Mica Schist (Group of medium-grade metamorphic rocks)
Schist (Micaceous Schist)
Mica Schist
Moqui Marble (Shaman Stone)
Ironstone Concretion (Fe2O3) - primarily Hematite or Goethite shell with Sandstone core
Nuummite
Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)
Ironstone Concretion (Moqui Marble)
Ironstone concretion (Fe2O3 with a sandstone core)
Basalt (with possible quartz veinsing)
Basalt
Milky Quartz
Silicon Dioxide (SiO2)
Fluorite
Fluorite (CaF₂)
Fluorite
Calcium Fluoride (CaF2)
Green Fluorite
Calcium Fluoride (CaF2)
Fluorite (Purple Fluorite in Matrix)
Fluorite (Calcium Fluoride, CaF2)
Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
Aventurine
Aventurine Quartz (SiO2 with inclusions)
Lapis Lazuli
Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)
Ironstone with Pyrite
Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)
Titanium Quartz (Rough)
Titanium-included Silicon Dioxide (SiO2 + Ti)
Hematite (Iron Ore)
Hematite (Fe2O3)
Limonite (after Pyrite Pseudomorph)
Limonite (Hydrated Iron Oxide Mixture, FeO(OH)·nH2O)
Hematite
Iron(III) oxide (Fe2O3)
Arsenopyrite with Quartz
Arsenopyrite (FeAsS)
Black Tourmaline in Quartz Matrix
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)
Pyrite
Iron Disulfide (FeS2)
Yellow Aventurine
Quartz (SiO2) with iron-bearing inclusions
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Nuummite
Orthorhombic amphibole (Gedrite and Anthophyllite mixture) - (Mg,Fe)7Si8O22(OH)2
Nuummite
Antophyllite-Gedrite (Orthorhombic amphiboles)
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Ironstone (with Limonite/Goethite)
Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O and Hematite Fe2O3)
Schist
Mica Schist
Basalt
Aphanitic mafic volcanic rock (primarily plagioclase feldspar and pyroxene)
Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors)
[Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2
Mica Schist
Mica Schist (Schistose metamorphic rock rich in Muscovite/Biotite)
Vesicular Basalt (Scoria)
Basalt (Extrusive Igneous Rock)
Iron Slag
Iron smelting byproduct (Glassy/vesicular silicate)
Mica Schist
Mica Schist (primarily Muscovite and/or Biotite composition)