What are the 2 general types of hydrothermal deposits?

What are the 2 general types of hydrothermal deposits?

Two Types of Hydrothermal Deposits

• Conditions for Formation.
• Brine is Essential.
• Mesothermal Deposits.
• Epithermal Deposits.

What are some examples of hydrothermal ore deposits?

Hydrothermal mineral deposits are divided into six main subcategories: porphyry, skarn, volcanogenic massive sulfide (VMS), sedimentary exhalative (SEDEX), and epithermal and Mississippi Valley-type (MVT) deposits.

Where are hydrothermal mineral deposits found?

Typical hydrothermal deposits form below the seawater/sediment interface and are called stratabound deposits—more rarely these deposits can form on the seafloor as chimneys, mounds, caprock, or Fe-rich muds.

What minerals are formed in hydrothermal systems?

Hydrothermal Minerals

• Galena and Sphalerite with Calcite.
• Siderite after Calcite on Galena.
• Dolomite after Calcite on Sphalerite.

What is a sedimentary deposit?

mineral deposits formed during the accumulation of sediment on the bottom of rivers and other bodies of water. According to their place of formation they are divided into river, swamp, lake, sea, and ocean deposits.

What is hydrothermal mineral deposition?

hydrothermal mineral deposit, any concentration of metallic minerals formed by the precipitation of solids from hot mineral-laden water (hydrothermal solution). The solutions are thought to arise in most cases from the action of deeply circulating water heated by magma.

What are the two types of mineral deposits?

Generally we can classify mineral deposits into two major groups: Industrial and non industrial.

Which valuable mineral is commonly found as a placer deposit?

Mineral Deposits The most common placer deposits are those of gold, platinum group minerals, gemstones, pyrite, magnetite, cassiterite, wolframite, rutile, monazite, and zircon. The California gold rush in 1849 began when someone discovered rich placer deposits of gold in streams draining the Sierra Nevada Mountains.

What are the 3 main types of sedimentary rocks?

Common sedimentary rocks include sandstone, limestone, and shale. These rocks often start as sediments carried in rivers and deposited in lakes and oceans. When buried, the sediments lose water and become cemented to form rock.

Where are porphyry copper deposits found?

Large porphyry copper deposits are worked in the southwestern United States (where molybdenum is produced as a by-product), the Solomon Islands, Canada, Peru, Chile, Mexico, and other parts of the world.

What are the four mineral deposits?

9.36), copper–lead–zinc, and platinum–chromium–nickel–cobalt. Figure 9.36. The multiple-mineral deposits are composed of more than one ore-forming mineral commodities in different ratios to make the deposit economic. The deposits include chalcopyrite, galena, and sphalerite.