Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Almandine Garnet
Almandite (Fe3Al2(SiO4)3)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky or Iron-Stained Quartz
Quartz (Silicon Dioxide, SiO2)
Agate (specifically a Blue Agate Geode Slice)
Chalcedony (cryptocrystalline variety of Quartz); SiO2
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rough Quartz (or Quartzite pebble)
Silicon Dioxide (SiO2)
Sunstone and Green Aventurine
Sunstone: (Ca,Na)[(Al,Si)2Si2O8] (Plagioclase Feldspar Group); Green Aventurine: SiO2 (Quartz)
Calcite (Yellow/Orange variety - sometimes called Honey Calcite)
Calcite
Lapis Lazuli
A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Gneiss
Gneiss
Gneiss
Gneiss (Metamorphic high-grade)
Clear Quartz (or Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Black Obsidian and Hematite
Volcanic Glass (SiO2) and Hematite (Fe2O3)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Yellow Quartz Pebble (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Granite
Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase Feldspar)
Gneiss with Quartz Veining
Gneiss (High-grade regional metamorphic rock)
Pyrite
Iron Disulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Fluorite
Calcium Fluoride (CaF2)
Orange Calcite
Calcite (CaCO3)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Schist
Mica Schist (Variable chemistry, often rich in muscovite and biotite)
Quartz (Milky/Cloudy Variety)
Silicon Dioxide (SiO2)
Serpentinite
Serpentine rock (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4
Gneiss
Gneiss (High-grade regional metamorphic rock)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Labradorite (tumbled)
Labradorite (a plagioclase feldspar mineral between anorthite and albite; chemical formula: (Ca,Na)(Si,Al)4O8)
Malachite
Copper Carbonate Hydroxide [Cu2CO3(OH)2]
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
Fluorite
Calcium Fluoride (CaF2)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Gneiss (Metamorphic Rock)
Gneiss
Quartz
Quartz (SiO₂)
Quartz
Quartz (Silicon Dioxide, SiO2)
Greisen
Greisen