This list of ores classified as natural and rare gold minerals are refractory to process. All these are sulphides refractory gold bearing minerals and will have a poor response behaviour to usual cyanidation extraction methods, and for the little guy, best used for exhibit or sold to rock collectors on eBay.
| Native Gold | Au Formula | |
| Muthmannite | Very Rare Crystal. Yellow white, opaque; Perfect Cleavage. Mohs 2.5-3.5; SG 7.5-8 Dana number: 442 | AgAuTe |
| Montbrayite | Rare telluride, and it contains ~ 50 wt% Au | (Au,Sb)2Te3 |
| Petzite |  | Ag3AuTe2 |
| Rhodite | Naturally occurring alloy of gold and rhodium with an SG of 15.5 – 16.8 | AuRh |
| Iridic Gold | Natural alloy of gold and iridium containing 62% gold, 30% iridium, 4% platinum, and 2% silver. | AuIr |
| Electrum |  Hardness: 2.5-3 and Density: 12.5-15.5 | AuAg |
| Cuproauride (Tetra-auricupride) |  | AuCu |
| Porpezite (palladium) |  Natural gold alloy containing 5-10 wt % Pd | Au,Pb |
| Bismuthian Gold | White | AuBi |
| Fishchesserite |  Opaque, Pale pink in reflected light, Metallic luster | Ag3AuSe2 |
| Aurostibite (antimonides) |  | AuSb2 |
| Uytenbogaardtite |  | Ag3AuSb2 |
| Gold Tellurate | Deadly Rare. UFO Rare | Au(HTeO4)3 |
| Kostovite |  | AuCute4 |
| Nagyagite |  | Pb5Au(TeSb)4S5-8 |
| Syvanite |  | AuAgTe4 |
| Krennerite |  | AuAgTe2 |
| Calaverite (gold telluride) |  | AuTe2 |
| Rozhkovite |  Palladian variety of Auricupride | (Cu,Pb)3Au2 |
| Maldonite |  SG 15.5 with Hardness of 1.5-2 | Au2Bi |
| Auricupride |  | AuCu3 |
| Amalgan | Also very rare | Au2Hg3(x) |
https://www.dakotamatrix.com/mineralpedia/8175/sylvanite
https://nevada-outback-gems.com/mineral_information/Electrum_mineral_info.htm
https://web.archive.org/web/20220812054654/https://www.surreyminerals.com/