![Minerals | Free Full-Text | Mineral Inventory of the Algares 30-Level Adit, Aljustrel Mine, Iberian Pyrite Belt, Portugal | HTML Minerals | Free Full-Text | Mineral Inventory of the Algares 30-Level Adit, Aljustrel Mine, Iberian Pyrite Belt, Portugal | HTML](https://www.mdpi.com/minerals/minerals-10-00853/article_deploy/html/images/minerals-10-00853-g005.png)
Minerals | Free Full-Text | Mineral Inventory of the Algares 30-Level Adit, Aljustrel Mine, Iberian Pyrite Belt, Portugal | HTML
![File:The run in to a small open quarry and a collapsed adit leading to an underground chamber at the top of Gallt y Mawn Mine West - geograph.org.uk - 433347.jpg - Wikimedia File:The run in to a small open quarry and a collapsed adit leading to an underground chamber at the top of Gallt y Mawn Mine West - geograph.org.uk - 433347.jpg - Wikimedia](https://upload.wikimedia.org/wikipedia/commons/b/b4/The_run_in_to_a_small_open_quarry_and_a_collapsed_adit_leading_to_an_underground_chamber_at_the_top_of_Gallt_y_Mawn_Mine_West_-_geograph.org.uk_-_433347.jpg)
File:The run in to a small open quarry and a collapsed adit leading to an underground chamber at the top of Gallt y Mawn Mine West - geograph.org.uk - 433347.jpg - Wikimedia
![Minerals | Free Full-Text | Mineral Inventory of the Algares 30-Level Adit, Aljustrel Mine, Iberian Pyrite Belt, Portugal | HTML Minerals | Free Full-Text | Mineral Inventory of the Algares 30-Level Adit, Aljustrel Mine, Iberian Pyrite Belt, Portugal | HTML](https://www.mdpi.com/minerals/minerals-10-00853/article_deploy/html/images/minerals-10-00853-g001.png)