Jump to content
  • Manganese and Iron Dendrites




    Kingdom: n/a
    Phylum: n/a
    Class: n/a
    Order: n/a
    Family: n/a
    Genus: n/a
    Species: n/a

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Jurassic
    Sub Period: None
    Epoch: Late
    International Age: Tithonian


    Weissjura Group
    Altmühltal Formation


    Collector: T. Bastelberger
    Date Collected: 06/01/1979
    Acquired by: Field Collection


    Obere Haardt (quarry)
    Langenaltheim (village)


    Dendrites are moss- or tree-like pseudofossils on the margins of rock fissures and fossils, usually on the bedding surfaces of platy limestones and sandstones.

    Mineral-rich water with high concentrations of iron and manganese has penetrated microscopic cavities between limestone layers, and diffusion-limited growth has created these brown iron and black manganese dendrites, which are often mistaken for fossil ferns or fossil moss..

    This slab with manganese and iron dendrites comes from the lithographic limestones of Solnhofen.

    User Feedback


    Posted (edited)

    On 2/5/2022 at 3:36 PM, abyssunder said:

    Nice manganese and iron oxide dendrites! :)

    Hmm, as a chemist by profession I should have been more precise: manganese and iron oxide.

    Edited by oilshale

    Share this comment

    Link to comment
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now

  • Create New...