Geology Superstore
Geology Superstore

Ironstone – USA

£2.00£30.00 ex VAT

Specimens of Ironstone that have been collected from Breitung Mine, Marquette County, Negaunee, Michigan, USA. These specimens are a deep reddish brown in colour with some specimens exhibiting clear banding. Please note that banding is not visible on all pieces. These specimens are available in very limited supply with three sizes to choose from. They come supplied in a white card tray with information label.

Additionally we also have one large display piece available, measuring approximately 18cm x 15cm at its widest points. This display specimen exhibits a distinct botryoidal texture on its top surface, making it an intriguing and appealing specimen to add to any collection.

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  •  Delivery & Return


    We ship to all 50 states, Washington DC.
    All orders are shipped with a UPS tracking number.
    Always free shipping for orders over US $200.
    During sale periods and promotions the delivery time may be longer than normal.


    Elessi will accept exchanges and returns of unworn and unwashed garments within 30 days of the date of purchase (14 days during the sales period), on presentation of the original till receipt at any store where the corresponding collection is available within the country of purchase.

    Your return will usually be processed within a week to a week and a half. We’ll send you a Return Notification email to notify you once the return has been completed.
    Please allow 1-3 business days for refunds to be received to the original form of payment once the return has been processed.


    Give us a shout if you have any other questions and/or concerns.
    Phone: +1 (23) 456 789

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Samples of Ironstone gathered from Breitung Mine located in Marquette County, Negaunee, Michigan, USA, showcase a rich hue of deep reddish-brown, occasionally presenting clear bands. It’s important to note though that not all pieces exhibit this banding feature. Comprising three iron-rich minerals—Hematite, Goethite, and Magnetite—this ironstone was frequently accompanied by quartz waste during its extraction. Dating back to 1844, the Breitung Mine holds historical significance, though it is no longer active. It was never a sizeable endeavour even during its operational phase however, featuring only a single recognised shaft. These rocks originate from the Paleoproterozoic era, dating back approximately 2.5 to 1.6 billion years. These specimens are only available in very limited quantities and are offered in three size variations, arriving in a white card tray accompanied by an informative label.

Alternatively, we offer a single large display piece measuring approximately 18cm x 15cm at its widest points. This showcased specimen features a distinctive botryoidal texture on its upper surface, adding an intriguing element to any collection.

Weight N/A

1.5" x 1.5", 2" x 2", 3" x 2", Display Piece

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