ok so yours the ones in (green short background ) are Crystal Gold Granite - porphyritic granite with quartz, K-feldspar, plagioclase feldspar, and mafic mineral(s) from an River intrusion the "Melted rivulets" within the rock are Feldspar... nice color but the metal "Look" isn't right... if it was gold i'd Say jump (Red Background rock DAMN NAICE!) Id jump for joy finding that one! but as for your other ones.. sorry to say nope.. if you find gold you'll know its gold weather its in small grains, or malliated around a rock or in a vein or a nugget.. you'll know its gold. I used to question this but being an indestructible (almost) metal and a noble metal it really just wants to stay stuck to itself and bend around its settings.. gold sulfates usually happen when the gold is being held in suspension with other metals that are less than noble..IE: a reactive reducer that is bonded to an inactive metal will then be able to hold the gold in suspension with the water h2o molecule thus causing the sulfate.. <img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=812349"/>
Calaverite is the most common gold sulfate with Sylvanite being a second. These two are metal Tellurides they were found because of Telluride mining claims and the Sulfides that made the miners very sick ( and killed a bunch in Germany oddly "Hell's Gold")
this is a full ;list of the Sulfides that can hold gold in suspension.
Au: 05a Chalcocite, 05b Djurleite, 05c Geerite, 05d Roxbyite, 05e Digenite, 05f Anilite; 10 Bornite; 15a Berzelianite, 15b Bellidoite, 15c Umangite, 15d Athabascaite; 20a Rickardite, 20b Weissite; 25a Stromeyerite, 25b Mckinstryite, 25c Selenojalpaite, 25c Jalpaite, 25d Eucairite, 25e Henryite; 30a Acanthite, 30a Argentite*, 30b Aguilarite, 30b Naumannite, 30c Hessite, 30d Cervelleite, 30e Stutzite; 35 Argyrodite, 35 Putzite, 35 Canfieldite; 40a Fischesserite, 40a Petzite, 40b Uytenbogaardtite, 40c Petrovskaite, 40d Penzhinite; 45 Bezsmertnovite, 50 Bogdanovite, 55 Bilibinskite, 60 Chenguodaite
02.BB With Ni, Fe: 05 Heazlewoodite; 10 Arsenohauchecornite, 10 Bismutohauchecornite, 10 Hauchecornite, 10 Tellurohauchecornite, 10 Tucekite; 15a Argentopentlandite, 15a Cobaltpentlandite, 15a Geffroyite, 15a Manganoshadlunite, 15a Pentlandite, 15a Shadlunite, 15b Godlevskite, 15c Sugakiite; 20 Vozhminite
02.BC With Rh, Pd, Pt, etc.: 05 Palladseite, 05 Miassite; 10 Oosterboschite; 15 Jagueite, 15 Chrisstanleyite; 20 Keithconnite, 25 Vasilite, 30 Telluropalladinite, 35 Luberoite, 40 Oulankaite, 45 Telargpalite, 50 Temagamite, 55 Sopcheite, 60 Laflammeite, 65 Tischendorfite, 70 Kharaelakhite
02.BD With Hg, Tl: 05 Imiterite, 10 Gortdrumite; 15 Balkanite, 15 Danielsite; 20 Donharrisite, 25 Carlinite; 30 Bukovite, 30 Thalcusite, 30 Murunskite; 35 Rohaite, 40 Chalcothallite, 45 Sabatierite, 50 Crookesite, 55 Brodtkorbite
02.BE With Pb(Bi): 05 Betekhtinite, 10 Furutobeite; 15 Rhodplumsite, 15 Shandite; 20 Parkerite, 25 Schlemaite, 30 Pasavaite
sulfides are a NIGHTMARE...lol but if you or anyone else needs help on Digestion or Aqua regia, or processes like Parks process or Blowpipe refinement... let me know... i'm quickly becoming a little better than useless with them! lol!
Anyhoo! good hunt... And may you FIND A nugget the size of your Leg! (I would like to hold the nugget when you do!)