How To Identify Minerals In Rocks Of Gold Ore

Lots of people who may have difficulty in identifying the mineral gold ore in the rocks, especially for those who would lay the carrier rock type gold because gold is usually always accompanied with a kind of mineral carriers such as mineral pyrite, chalcopyrite, pyrhotite, pentlandite, since mineral carriers is very very similar to the veins of gold ore. But for people who already have experience probably will not find it difficult to identify except gold ore or gold is very fine micro-crystals. In this situation, the gold can not be easily observed and to see a need for a tool like a magnifying glass or microscope to see the gold ores

These few simple characteristics that can be used in identifying the gold content of ore minerals contained in rock or ore :

Color : This mineral is metallic-colored variety, but depends also on the purity of gold. Sometimes gold is also colored a little pale from associating with silver metal content

Hardness: 2.5 to 3. Gold when forged with a hammer is not easily destroyed while the remaining fragile, will break and splinter when struck with a hammer. When both and placed in a pan of water, the gold will sink quickly and refused to move, the rest will sink slowly and mix with ease
Density: 15.6 to 19.3
The density varies depending on the dirt - a more pure heavy.
Gold: Usually in irregular, plate or mass scales, would rarely crystallizes. Gold is also found in groups of crystals similar to crystals Family elongated in the direction of octahedral axis. Irregular crystals distorted to the point of passing into the form of filiform, reticulated and dendritic.
Identification and Diagnostics
Easy to melt gold at 2.5 to 3. And do not easily dissolve in common acids but easily dissolved in a mixture of nitric and hydrochloric acid (aqua regia).
        Although gold is a very rare element found widely in the wild but often do so even in small quantities and often in such small particles not visible to the naked eye, or as an aggregate of quartz crystals in the cavity. Phyrite almost always associated with gold and color similar to gold but phyrite easily destroyed if the forging with a hammer. Gold is the only mineral that will easily scratch, leaving the golden-yellow powder residue. Gold also occurs as microscopic and submicroscopic particles in sulfide minerals, mainly pyrite, chalcopyrite, arsenopyrite and pyrhotite. All this often occurs in veins and zones of hydrothermal alteration and replacement. They occur as macroscopic grains and micro crystalline and crystalline.