What does sulfides look like?

What does sulfides look like?

The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin. But, there are a few vitreous and transparent members such as realgar, cinnabar and orpiment that tend to break the mold, so to speak.

How do you identify sulphides?

Most of the sulfides are simple structurally, exhibit high symmetry in their crystal forms, and have many of the properties of metals, including metallic lustre and electrical conductivity. They often are strikingly coloured and have a low hardness and a high specific gravity.

What are sulfide deposits?

Volcanogenic massive sulfide ore deposits, also known as VMS ore deposits, are a type of metal sulfide ore deposit, mainly copper-zinc which are associated with and created by volcanic-associated hydrothermal events in submarine environments.

What is a ore body?

An ore body is a mass of rock that contain ore and from which a commodity of value will be extracted. Not all ore within an ore body will be extracted. Ore bodies are divided into reserves and resources.

Where is sulfide found?

Hydrogen sulfide is found naturally in crude petroleum and natural gas. It is also produced through the bacterial breakdown of organic matter. Hydrogen sulfide can be produced by decomposing human and animal waste, and is found in sewage treatment plants and livestock areas.

What is sulfide ore?

Sulfide ores, which are generally mined from underground and often found in conjunction with copper-bearing ores, contain copper–iron sulfides in association with nickel–iron sulfides. The principal sulfide mineral of nickel is pentlandite [(NiFe)9S8].

What color is sulfide?


Sulfide minerals
name colour specific gravity
sphalerite brown, black, yellow; also variable 3.9–4.1
stannite steel-gray to iron-black 4.3–4.5
stibnite lead- to steel-gray, tarnishing blackish 4.6

Are sulfide and sulphide the same?

sulfide, also spelled sulphide, any of three classes of chemical compounds containing the element sulfur. The three classes of sulfides include inorganic sulfides, organic sulfides (sometimes called thioethers), and phosphine sulfides.

What does bornite look like?

Bornite has a brown to copper-red color on fresh surfaces that tarnishes to various iridescent shades of blue to purple in places. Its striking iridescence gives it the nickname peacock copper or peacock ore.

What is the name of sulphide ore?

The most common sulfide ore minerals are pyrite, pyrrhotite, chalcopyrite, sphalerite, and galena, whereas the most common oxide ore minerals are hematite, magnetite, ilmenite, and chromite.

How are ore bodies formed?

Deposits of minerals form when a medium that contains and transports mineral-making ore releases and deposits the ore. When magma or lava cools, the magma and ore carried within it crystallize to form tiny minerals in the newly-created igneous rock. Minerals found in such rock might include feldspar or mica.

What is the difference between a deposit and ore body?

Orebody is an economic term, while mineral deposit is a geological term. A mineral deposit that is sufficiently rich to be worked, at a profit, is called an orebody. No deposit consists entirely of a single ore mineral. There are always admixtures of valueless minerals, collectively called gangue.

What are sulfides and why are they dangerous?

Sulfides are a geologic byproduct of mining in this area, and by exposing sulfides to the air and water in our atmosphere, sulfuric acid can be created — threatening to poison the nearby water, environment, and communities. Why Is Sulfide Mining Dangerous?

What is sulfide mining?

Sulfide mining (also known as metallic mining) refers to mining operations which remove metals, such as copper, nickel, platinum and others, from sulfur bearing ores.

What are the characteristics of sulfide class minerals?

The Sulfide Class minerals comprise an economically important class of minerals. Most major ores of important metals such as copper, lead and silver are sulfides. Strong generalities exist in this class. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities,…

What is the difference between sulfide and normal sulfide?

Only minerals in the sulfide class that have no appreciable sulfur are included in these subclasses. If there is enough sulfur in the mineral to be named in the formula then it is treated as a normal sulfide. There is an exception in the case of the Sulfosalts.