Magnetite
Unknown Owner
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A sharp and complete-all-around crystal of magnetite from this famous quarry, which opened in 1887 and produced amazing specimens of magnetite and other rare minerals in its short lifetime. Today it is considered one of the most classic and desired USA localities. The Tilly Foster Mine was an iron mine in Putnam County, New York. This is as fine a thumbnail as you can ask for of a rare style and form of magnetite for any USA or thumbnail suite. It most likely dates to the WW1 era or before. From the award-winning thumbnail collection of Sharon and William Panczner, author of the book Minerals Of Mexico, and last seen and exhibited in the 1960s.
Product details
SpeciesMagnetite
SizeThumbnail
Dimensions2.1 x 1.7 x 1.6 cm
Added on10/23/2024
LocalityUSA, New York, Tilly Foster Iron Mine
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 08/2024 | Unknown Owner | Not disclosed |
| — | The Arkenstone | Not disclosed |
Learn more

Mineral guide
Learn about Magnetite
iconic magnetic iron oxide with crisp octahedral crystals, mirror luster on matrix, and coveted Huanggang (Inner Mongolia) specimens for collectorsRegional guide

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