Amethyst in Matrix
Silicon Dioxide with Iron Impurities (SiO2)
Category
Browse mineral with metamorphic or sedimentary host specimens identified by the Rock Identifier community.
Amethyst in Matrix
Silicon Dioxide with Iron Impurities (SiO2)
Agate
Silicon Dioxide (SiO2) - Banded Chalcedony
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Geode with Quartz and Chalcedony
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Diamond
Native Carbon (C)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Garden Quartz (Lodalite)
Silicon Dioxide (SiO2) with various inclusions
Ruby
Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)
Quartz (Specifically Clear to Smoky Quartz point)
Silicon Dioxide (SiO2)
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
Beryl (Aquamarine) in Matrix
Beryllium aluminum silicate (Be3Al2(SiO3)6)
Garnet (likely Almandine or Pyrope)
Garnet Group (e.g., Almandine: Fe3Al2(SiO4)3; Pyrope: Mg3Al2(SiO4)3)
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
Pyrite
Iron Sulfide (FeS2)
Fluorite (Green Fluorite on Host Rock)
Fluorite (Calcium Fluoride, CaF2)
Gold Nugget
Native Gold (Au)
Malachite and Azurite on Matrix
Cu2CO3(OH)2 (Malachite) / Cu3(CO3)2(OH)2 (Azurite)
Schist
Mica Schist
Fluorite
Fluorite (Calcium Fluoride, CaF2)
Sagenitic Agate (with Goethite/Rutile inclusions)
Silicon Dioxide (SiO2) with hydrous ferric oxide inclusions
Banded Agate (Crazy Lace/Mexican Agate Variety)
Silicon Dioxide (SiO2)
Rose Quartz
Quartz (Silicon Dioxide - SiO2) with trace amounts of titanium, iron, or manganese
Blue Chalcedony
Silicon Dioxide (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Natural or Cultured Pearl
Calcium Carbonate (Aragonite and Conchiolin), CaCO3
Rutilated Quartz (or Tourmalinated Quartz if inclusions are Tourmaline)
Silicon Dioxide (SiO2) with Rutile (TiO2) or Tourmaline inclusions
Chrysocolla in Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix
Pyrite
Iron Pyrite (FeS2)
Malachite Coating on Host Rock
Malachite [Cu2CO3(OH)2]
Quartz (Milky or Yellow variety)
Silicon Dioxide (SiO2)
Specular Hematite with Quartz and Limonite
Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)
Orange Calcite
Calcium Carbonate (CaCO3)
Fluorite
Calcium Fluoride (CaF2)
Clear Quartz
Silicon Dioxide (SiO2)
River Cobble (Gneiss/Schist mix)
Foliated Metamorphic Rock (Gneissic/Schistose)
Copper Ore with Chrysocolla and Azurite
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / Cu3(CO3)2(OH)2 (Azurite)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Turquoise in Matrix
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O