Image credits
Photos in these guides come from Wikimedia Commons under free licences (Creative Commons or public domain). Each is credited here and under the image. Illustrated cards without a credit are original graphics made for this site.
Image: Rock_with_white_veins_at_Imperia_in_Italy.jpg by OliBac (https://www.flickr.com/people/olibac/), CC BY 2.0, via Wikimedia Commons
Image: Eso1733s_Artist's_impression_of_merging_neutron_stars.jpg by University of Warwick/Mark Garlick, CC BY 4.0, via Wikimedia Commons
Image: Underground_3D_model.jpg by Kelapstick, CC BY-SA 3.0, via Wikimedia Commons
Image: Ss_sluice2.jpg by Whippsinc at English Wikipedia, Public domain, via Wikimedia Commons
Image: Gold_bullion_2.jpg by Szaaman, Public domain, via Wikimedia Commons
Image: Goldinpan.jpg by AlaskaMining at English Wikipedia, CC BY 2.5, via Wikimedia Commons
Image: Ewaste-pile.jpg by AvWijk, Public domain, via Wikimedia Commons
Image: Small_gold_nugget_5mm_dia_and_corresponding_foil_surface_of_half_sq_meter.jpg by PHGCOM, CC BY-SA 3.0, via Wikimedia Commons
Image: SEG_DVD_430_-_Printed_circuit_board-4276.jpg by Raimond Spekking, CC BY-SA 4.0, via Wikimedia Commons
Image: Or_de_Varna_-_Nécropole.jpg by Yelkrokoyade, CC BY-SA 3.0, via Wikimedia Commons
Image: Ag-Au-Cu-colours-english.svg by Original image: Metallos, CC BY-SA 4.0, via Wikimedia Commons
Image: Gold-crystals.jpg by Alchemist-hp (talk) www.pse-mendelejew.de, CC BY-SA 3.0 de, via Wikimedia Commons
Image: Kroisos._Circa_564-53-550-39_BC._AV_Stater_(16mm,_10.76_g)._Heavy_series._Sardes_mint.jpg by CNG Coins, CC BY-SA 3.0, via Wikimedia Commons
Image: Panorámica_de_Las_Médulas.jpg by Rafael Ibáñez Fernández, CC BY-SA 3.0, via Wikimedia Commons
Image: 1_ballarat_sovereign_hill_aerial_panorama_2018.jpg by Chensiyuan, CC BY-SA 4.0, via Wikimedia Commons
Image: Welcome_Stranger.jpg by Unknown authorUnknown author, Public domain, via Wikimedia Commons
Image: Sutter's_Mill_(2).JPG by Holly Cheng, CC BY-SA 4.0, via Wikimedia Commons
Image: Chilkoot-trail.jpg by National Park Service, Public domain, via Wikimedia Commons
Image: Sofia_-_Panagyurishte_Thracian_Gold_Treasure.jpg by Ann Wuyts, CC BY 2.0, via Wikimedia Commons
Image: Waterfall,_Witwatersrand_National_Botanical_Gardens.jpg by Chris Eason from London, CC BY 2.0, via Wikimedia Commons
Image: Gold_heap_leaching.jpeg by see Source., Public domain, via Wikimedia Commons
Image: Bank-of-England.jpg by acediscovery, CC BY 4.0, via Wikimedia Commons
Image: Tombstone_courthouse_assay_lab.jpg by The original uploader was Pretzelpaws at English Wikipedia., CC BY-SA 3.0, via Wikimedia Commons
Image: Making_a_silver_chain,_18_(25).jpg by W.carter, CC BY-SA 4.0, via Wikimedia Commons
Image: Super_Pit_Gold_Mine,_Kalgoorlie,_WA,_2023,_11.jpg by Chris Olszewski, CC BY-SA 4.0, via Wikimedia Commons
Image: Rio_tinto_river_CarolStoker_NASA_Ames_Research_Center.jpg by Carol Stoker, NASA, Public domain, via Wikimedia Commons
Image: Gold_panning_at_Bonanza_Creek.JPG by Unknown author, CC BY-SA 3.0, via Wikimedia Commons
Image: JWST_spacecraft_model_3.png by NASA, Public domain, via Wikimedia Commons