# Aluminium bar surface etched

- By: Alchemist-hp (talk) (www.pse-mendelejew.de)
- Date: 2008-08-27
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Aluminium_bar_surface_etched.jpg)
- Rights: [FAL](http://artlibre.org/licence/lal/en)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/e/e1/Aluminium_bar_surface_etched.jpg/1920px-Aluminium_bar_surface_etched.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

Bar of (Al) aluminium crystal growth raw material, with visible dendrites on the macroetched surface, purity 99.9998%, sector size about 55 × 37 mm (from the collection of Ethan Currens).