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Granpa Granpa 15 May 2019
0

Internal structure of Earth


Mineral assemblages of common igneous rocks and their relation to the interior structure of the Earth
 
Type
Structure
Density
Bowen's series
Type

Water

Ocean




 
1.0
1.0
0
0.0606
 
6371
0
3.688
 
1.0
 
Pelagic
Amorphous


Silica
(SiO2)

Diatomite



Chert










 
Calcareous

2.7/2.95
2.85

Calcite/Aragonite
Dolomite

Limestone
Dolostone

Karst

Marble
Tremolite
Diopside
Calc–silicate Hornfel
Skarn
2.3 - 2.7
-
0.000023
0.0023
6371
0
0.1

 
Evaporite



Gypsum
(CaSO4)
















 
Evaporite



Halite
(NaCl)

















Organic



Organic matter

Peat



(1)Oil
(1)Natural gas
(1)Lignite
(1)Bituminous coal
(2)Anthracite
(4)Graphite











Clastic



Quartz

Sand



Sandstone
Quartz arenite
Quartzite















 
Argillaceous
Tectosilicates
2.65
Quartz
Quartz
(SiO2)

Granodiorite(>20%)
(Dacite)

KREEP
Continental Crust

























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Princeanuj Princeanuj 18 April 2016
1

2015 Roundup of Some of The Top Gemstones Auctioned Worldwide

2015 was quite a successful year for the auction of the gemstones around the globe. With record-setting bids from private buyers, the year 2015 had recorded some of the biggest and major sales of the gemstones as well as stone studded jewelry!


Auctions have become one of the most awaited events for the affluent folks or the ones who admire beauty or are in the habit of possessing rare & unique stuff. Some of the rarest and the most stunning gemstones, such as the Emerald stones, Rubies, Diamonds and others, become the part of the auctions. The gemstones or the jewelry auctioned at the different event are not the ordinary ones in any sense; they either belong to renowned personalities in the past or are unique in nature/appearance or are th…


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