Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Diamonds Are Sought By Smell Like Truffles

06.12.2005


Russian researchers suggest that diamond deposits should be explored by smell of soil. Kimberlite pipes deeply hidden under the sedimentary rock cover are given away by the composition of adsorbed gases in superstrata. Specialists of the All-Russian Research Institute of Geological, Geophysical and Geochemical Systems, Lomonosov Moscow State University, Open Joint Stock Company "Arkhangelskgeoldobycha" (Stock company "ALROSA") have compared the composition of gases adsorbed in the rock of already known diamondiferous kimberlite pipes and the rock from the Russian plain, where diamonds have never been found. It has turned out that the kimberlite mass presence is given away by constrast in carbohydrates content in the soil and sediments. Kimberlite (blue earth) is specific rock filling earth cuts that were formed when gases burst through the earth’s crust strata – the so-called blow holes (diatremes). They consist of cemented rubble of mafic minerals. Altogether, about 1.5 thousand blow holes are known, and diamonds are found approximately in every tenth blow hole.



Geologists have investigated several hundreds of specimen from the kimberlite pipes from the Arkhangelsk and Yakut diamondiferous provinces, and 3,000 specimen from the Russian platform, which were considered the standard no-diamond-containing rock. The adsorbed gases’ composition was determined with the help the gas chromatograph by heating crushed rock up to 200 degrees C so that superfine carbohydrates films evaporated from the rock.

Then the researchers compared the correlation in the quantity of carbohydrates of various compositions adsorbed in the kimberlite and in the Russian platform rock. Their total contents is approximately equal in both cases – slightly less than cubic centimeter per kilogram, but in the specimen from diamondiferous rock mass, the share of heavy carbohydrates (containing 4 to 5 carbon atoms) is usually significantly higher. Sometimes, up to 15 cubic centimeters of gases per kilogram are contained in kimberlite rock, which practically does not happen even in oil and gas deposits, so kimberlite pipes are active “breathing” zones of the Earth, this fact giving away their presence even if volcanic pipes are located extremely deeply.


This method is applied for investigation of “gas fields” in search of oil and gas. Within several recent years, geologists have tried the method not only on kimberlite pipes, but also for ore and precious metals exploration.

Sergey Komarov | alfa
Further information:
http://www.informnauka.ru

More articles from Earth Sciences:

nachricht Diving robots find Antarctic winter seas exhale surprising amounts of carbon dioxide
15.08.2018 | University of Washington

nachricht Algorithm provides early warning system for tracking groundwater contamination
14.08.2018 | DOE/Lawrence Berkeley National Laboratory

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

Im Focus: Lining up surprising behaviors of superconductor with one of the world's strongest magnets

Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur

What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

2018 Work Research Conference

25.07.2018 | Event News

 
Latest News

Unraveling the nature of 'whistlers' from space in the lab

15.08.2018 | Physics and Astronomy

Diving robots find Antarctic winter seas exhale surprising amounts of carbon dioxide

15.08.2018 | Earth Sciences

Early opaque universe linked to galaxy scarcity

15.08.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>