Quartzite — metamorphic rock consisting mainly of quartz . Sturdy and durable rock is white , gray, or reddish in color , very difficult to handle .
The genesis — metamorphism of siliceous sediments and some igneous rocks ( quartz porphyry ) . Most often associated with the formation of quartzite sandstone recrystallization during regional metamorphism . The compressive strength of 100-450 MPa, the average bulk density of 2.6 g/cm3, the average density of 2.68 g/cm3, fire resistance up to 1770 ° C. Composition: 70-80 % quartz , mica , feldspar, talc and other minerals. Texture: massive, schistose , spotty . Structure: grain (typically granoblastic ) aphanic . Some varieties of quartzite material used for the manufacture of low-cost Stonecutter’s products as an ornamental stone , is used as a facing stone.
Ferruginous quartzite ( dzhespilit ) . Used for manufacturing dynasty and as a flux ( in metallurgy ) acid-resistant material , construction (including ornamental ) stone . Implemented in the form of crushed stone in construction, flooring , concrete admixtures .
Crimson quartzite ‘ ( mined on the western shore of Lake Onega in Karelia Prionezhsky region . According to the place of production is called Shokshinsky .
History crimson quartzite deposit has more than 200 years. The period of rapid construction in St. Petersburg marked the beginning of the flourishing mining and Karelia . In those days produced stone was named accordingly — Shohanskim porphyry or the noble stone. The reason for that was , apparently , its similarity with the Egyptian porphyry wax color . Last time out of mind is the traditional material for finishing the most solemn tombs. This seems to be largely determined the fate and Shoksha quartzite . Thus, the pride of many of our fellow citizens is the fact that it is made of Shoksha quartzite sarcophagus of Napoleon , in Paris.
In Soviet times, the field development was resumed from 1922 . In 1938 at the International Exhibition in New York, crimson quartzite was praised . Until 1940, the deposit mined , producing large blocks of quartzite for the manufacture of ornamental and decorative stone and coarse- building products. For this purpose, spent just over 3 % of the developed quartzite . In 1940, » Glavogneuopr » in the face of the Leningrad Institute of Refractories based on testing and field trials conducted by technology provide an opinion — quartzite can be characterized as suitable for the production of refractory.
A special place in the history of the mine development is the use of crimson quartzite as an industrial raw material for the glass industry. When grinding the constituent components of glass and enamel are used in ball mills grinding media and lining of crimson quartzite . The unique physical, chemical and mechanical properties is crimson quartzite caused its wide application . In Soviet times, more than 20 companies throughout the Soviet Union used it in ball mills . Prior to 1992, virtually main products Shokshinsky career were lining and grinding media . The adjustment period has forced the company to reestablish the production of paving and pavement checkers
European standard (small pebbles the size of 100mm x 100mm x 100mm) . Among the recent major works using pavers 200x100x100 — paving the presidential court in the Kremlin. The modern name of the field » Shokshinsky field of crimson quartzite .»
The field is located in the Republic of Karelia Vepsskaya area on the western shore of Lake Onega , about 60km from the city of Petrozavodsk.
According to the protocol SRC number 8846 9 . 10 . ’81 Proven reserves by Shokshinsky crimson quartzite deposit account for more than 1.3 million m3
Shokshinsky deposit of quartzite and sandstone of » Quartz» is a source of raw materials for the production of paving blocks , bricks for ball mills , grinding media , blocks for the manufacture of decorative tiles and ritual items , as well as a stone for landscaping .
The sarcophagus of Napoleon , the central exhibition of the museum Les Invalides, Paris
In 1847, the architect Louis Visconti received from Karelia 47 blocks to create a crimson quartzite sarcophagus of Napoleon Bonaparte . Not surprisingly, the choice fell on shohansky porphyry — even then for » SHOKSHA » the reputation of the king’s stone, stone rulers — the widespread use of which in the decoration of the imperial residences found a lot of publicity in Europe. Exclusive monuments of crimson quartzite and today is made for French customers.
Lenin’s Mausoleum , Red Square , Moscow
Lenin’s Mausoleum on Red Square in Moscow — the third , now the current version , designed by the famous architect of the Soviet Schusev and a group of authors (1929-1930 ) . The tomb of Lenin — one of the vertices of Soviet architecture . The building is decorated with marble , quartzite crimson and Labrador , in particular from it made input tables, lined with coronal part of the structure , as well as letters of Lenin on a black labrodore .
Memorial architectural ensemble » Tomb of the Unknown Soldier «
The ensemble is built by architects DI Burdin , VA Klimov , Yu R. Rabaeva and sculptor NV Tomsk in 1967 ( labrodor black , red granite and quartzite raspberry ) . On 12 December 1997 , in accordance with the decree of the President of the Russian post number 1 honor guard was moved from the Mausoleum of Lenin at the Tomb of the Unknown Soldier. Guard carried the soldiers of the Presidential Regiment . Changing of the guard takes place every hour.
Cobbles crimson quartzite
Paving stone blocks of crimson quartzite has been known for centuries. Paul Kazan Cathedral is paved with raspberry quartzite in combination with marble and diabase . Under the feet of millions of parishioners only shohansky porphyry has retained its shape and volume , while the surrounding rocks greatly deteriorated . In addition to the amazing resilience to natural and weather resistant , crimson quartzite has a unique color and environmental friendliness . In all, even the most refined and exclusive country-house design project fits perfectly with crimson quartzite cobbles , natural stone attached to the house and aristocratic refinement.