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) |
http://www.dakotamatrix.com/mineralpedia/8175/sylvanite
http://nevada-outback-gems.com/mineral_information/Electrum_mineral_info.htm
https://web.archive.org/web/20220812054654/http://www.surreyminerals.com/