File:Franklinite (Franklin Marble, Mesoproterozoic, 1.03-1.08 Ga; Sterling Hill Mine, northern New Jersey, USA).jpg
Original file (1,684 × 1,709 pixels, file size: 1.85 MB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit].jpg&action=edit§ion=1){kind=link}
| Description |
English: Franklinite from the Precambrian of New Jersey, USA. (grains plucked from broken zinc ore)
Significant zinc ore bodies in the Franklin Marble of Mesoproterozoic age have been mined in northern New Jersey, USA for many decades. Zinc ores from the Sterling Hill and Franklin areas of New Jersey are dominated by red zincite (ZnO - zinc oxide) and black franklinite ((Zn,Fe)Fe2O4 - zinc iron oxide). The New Jersey zincite-franklinite bodies are traditionally considered as skarn deposits - the result of contact metamorphism of Cambro-Ordovician limestones by igneous intrusions. Elsewhere, igneous intrusion of limestones does result in the formation of odd mineral suites by contact metamorphism. However, these zinc ores do not appear to be skarn deposits. Their exact origin is still debated in the literature, but published research suggests that the zinc ore bodies were originally Zn-rich metalliferous sediments deposited in the margin of a marine basin. The marine basin was subsequently metamorphosed by subduction during the Grenville Orogeny (1.03-1.08 billion years ago) and became enclosed in marble host rocks by inverse diapirism. In addition to their economic geologic significance, the rocks and minerals from the Franklin and Sterling Hill zinc orebodies of New Jersey are famous for their gorgeous fluorescent colors under ultraviolet (UV) light (see elsewhere in this photo album). Locality: Sterling Hill Mine, eastern Sussex County, northern New Jersey, USA |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/50711161851/ |
| Author | James St. John |
Licensing
[edit].jpg&action=edit§ion=2){kind=link}
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/50711161851. It was reviewed on 14 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:37, 14 December 2020 | | 1,684 × 1,709 (1.85 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50711161851/ with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
.jpg&oldid=898169794){kind=link}