Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Category
Browse mineral (iron ore) specimens identified by the Rock Identifier community.
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Quartz Vein in Host Rock
Quartz (SiO2) in Mafic or Sedimentary Matrix
Fluorite
Calcium Fluoride (CaF2)
Fluorite
Fluorite (Calcium Fluoride - CaF2)
Fluorite (specifically Rainbow Fluorite or Purple Fluorite)
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
Green Fluorite
Calcium Fluoride (CaF2)
Malachite
Malachite - Cu2CO3(OH)2
Rhodonite, Gray Moonstone, and White Feldspar Mix
Multiple: MnSiO3 (Rhodonite), (K,Na)AlSi3O8 (Feldspar/Moonstone)
Cinnabar in Quartz
Silicon Dioxide (Quartz, SiO2) with Mercury Sulfide inclusions (Cinnabar, HgS)
Aquamarine
Beryl (Be3Al2Si6O18)
Arsenopyrite in Quartz Matrix
Arsenopyrite (FeAsS)
Rhodonite
Rhodonite (Manganese silicate), (Mn,Fe,Mg,Ca)SiO3
Silver (Jewelry form)
Native Silver (Ag)
Fluorite
Calcium Fluoride (CaF2)
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
Beryl (likely Aquamarine) in matrix
Be3Al2(SiO3)6 (Beryllium Aluminum Silicate)
Blue Celestite (with Galena)
Strontium sulfate (SrSO4) and Lead sulfide (PbS)
Galena
Lead(II) Sulfide (PbS)
Mica Schist
Mica Schist (Complex Silicate Rock)
Gold
Native Gold (Au)
Fluorite (likely Fluorite on Quartz/Matrix)
Calcium Fluoride (CaF2)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)
Iron-stained Quartz (Gossan/Limonite-coated Quartz)
Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)
Fluorite
Fluorite (Calcium Fluoride - CaF2)
Aragonite (Onyx Marble)
Calcium Carbonate (CaCO3), Orthorhombic crystal system
Zircon
Zircon (ZrSiO4)
Rhodochrosite
Manganese Carbonate (MnCO3)
Fluorite
Calcium Fluoride (CaF2)
Silver (Native Element)
Ag (Native Silver), with minor Copper (Cu)
Rhodonite
Manganese Silicate (Mn, Fe, Mg, Ca)SiO3
Arsenopyrite
Arsenopyrite (FeAsS)
Pegmatite (White Granite variant)
Pegmatitic Granite (Quartz and Feldspar rich)
Malachite
Malachite (Cu2CO3(OH)2)
Cinnabar
Mercury(II) sulfide (HgS)
Fluorite (often referred to as Rainbow Fluorite)
Fluorite (Calcium Fluoride, CaF2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Bauxite (Aluminum Ore)
Hydrated aluminum oxides, primarily Al(OH)3, AlO(OH)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Green Fluorite
Fluorite (Calcium Fluoride) - CaF2