Презентация на тему The Diamonds

to extract diamonds?
The well-known diamonds

the crystal updating of pure carbon.

"proper", "unalterable", "unbreakable, untamed". Diamonds are thought to have been

first recognized and mined in India, where significant alluvial deposits of the stone could be found many centuries ago along the rivers Penner, Krishna, and Godavari.

12.01 g·mol-1
Color - Typically yellow, brown or gray to colorless.

Less often blue, green, black, translucent white, pink, violet, orange, purple and red.
Crystal habit - Octahedral
Crystal system - Isometric-Hexoctahedral
Fracture - Conchoidal (shell-like)
Mohs scale – hardness 10
Streak – Colorless
Specific gravity - 3.52±0.01
Density - 3.5–3.53 g/cm3
Optical properties - Isotropic
Dispersion - 0.044

the lithospheric mantle occur at considerable depth corresponding to

the requirements of temperature and pressure. These depths are estimated between 140 and 190 km though occasionally diamonds have crystallized at depths about 300 km as well.
Also diamonds formed in diamantiferous kimberlites and volcanic pipe.

are and extracted worldwide in the special volcanic breed,

named a kimberlite.
Now diamonds are extract from two types of deposits: radical (kimberlites and lamproite pipes) and secondary – scatterings.
The main center of extraction there were South African countries and minor - Brazil.

of Rods"
“The miner”

History
Identification
Formation
Where and how to extract diamonds?

The well-known diamonds