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they are called kimberlites and lamprolites.

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Q: What are the primary diamond deposits called that are mined on earths surface?
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What is flat surface of a diamond called?

The flat surface of a diamond is called the table if it is on the 'top' of a cut diamond. Otherwise, the flat surface is called a facet, some with specific names. Read more, below.


Why are earthquake waves called primary secondary and surface?

Primary and secondary refer to the order in which they come out, surface waves are called surface because they resonate close to the surface


What are mineral deposits beneath earths surface that are different from the surrounding rocks are called what?

These are called veins


What are diamond deposits called?

Diamonds are erupted to the earth's surface by way of volcanic pipes. Diamonds are mined from these pipes. When water flows over these pipes, diamonds can tumble into the stream bed, and some diamonds are carried to the mouths of rivers into salt water. These are called alluvial diamonds. The name of the diamond deposit, then, depends on where you find the diamanods. .


What is the flat surface on a diamond called?

One flat surface is a table. Many flat surfaces are facets.


What natural resource do diamonds come from?

Hey, did you know that there are two types of diamond deposits? One type is found in "pipes" of volcanic rock, also known as "kimberlite," that are brought to the surface by magma. The other type, called alluvial deposits, are formed when natural diamonds are eroded from their original source, typically a kimberlite deposit. Cool, huh?


When did sapphires form?

Sapphires are mined from http://www.answers.com/topic/alluvium deposits or from primary underground workings. They form in rocks called pegmatites


What are deposits that form from minerals dissolved in ocean water?

Generically, they are called "rime". Primary constituents are salt, with other solutes being metal oxides and such.


Small hills that are formed form deposits left by streams on the surface of glacier are called?

Kames. Many are found in areas of kettles and moraines.


What role has moving water played in Earth's surface?

By weathering rock and carrying it away to different places. That process is called erosion. Then it deposits the sediments and builds, which is called deposition.


What are deposits of wind-blown rock flour called?

Loess deposits.


What would you call the calcium carbonate deposits?

It depends on the context - in geology they maybe called limestone deposits. In a corrosion sitaution they may be called calcareous deposits