Nigrozero Deposit (Tundra/Nordic Sunset, Ice Tundra)

“Nigrozero” is the only one running deposit of garnet amphibolites and one of the most developed deposits of highly-ornamental hard rocks in North region of Russia. The deposit is situated on a hill slope right on the Arctic Circle. The total square of the quarry is 4,87 hectares. The explored reserves of stone are 1 404,8 thous. m3.

The extraction is being carried out with diamond wire-sawing technology. It gives an opportunity to obtain blocks of higher quality and bigger sizes, with right-angled shape and to decrease the expenses.

The extraction is seasonal from April for November.

“Nigrozero” garnet amphibolite

“Nigrozero” garnet amphibolite (“Tundra”, in Europe also known as “Nordic Sunset”) is a high-ornamental hard rock. Due to polychrome tint with predominance of black, fine-grained structure, striped-and spotted texture of “Tundra” (“Nordic Sunset”) you can create refined interiors with inimitable in its beauty wall panels of big sizes. The picture variations of the stone depend on the direction of sawing. You can implement “Tundra” for wall-cladding, tomb-stones and for city amenities. It is equally fine with all types of face furnishing. Polished surface displays an inimitable texture of material.

  • Type of natural stone: garnet amphibolite
  • Commercial name: “Tundra” (in Europe also known as “Nordic Sunset”).
  • Geological age: Ar1 3 000 - 3 200 Ma
  • Annual extraction of blocks: up to 3 000m3 (extraction is seasonal)
  • Deposit: “Nigrozero”
  • Location: Russia, Republic of Karelia, Loukhi district, Chupa village, 50 km from Chupa railway station, 1000 km from St. Petersburg sea port, 1200 km from Kotka sea port (Finland).
  • Within the area of “Nigrosero” deposit the subtype of the material is enabled. The material is more white then “Tundra” and calls“Ice Tundra”
Index description Unit of measuring Value
Density kg/m3 2953
Water absorption % 0,225
Compressive strength in dry condition MPa 136,55
Compressive strength in wet condition MPa 112,75
Freese resistance F F 100
Salt resistance % 0,125
Wear resistance g/cm2 0,41
Stroke resistance cm 72,5
Index description Unit of measuring Value
Plagioclase % 15
Garnet % 8
Amphibole % 52
Quartz % 10
Biotite % 0,25
Secondary minerals (zoisite, sericite) % 9,25
Ore inclusions   single grains
Accessory minerals % 2
Index description Unit of measuring Range of indexes Average indexes
Specific effective activity in ERN Bk/kg 36-44 40
Application according to radiation factor Building raw material of I class NBR-99
Structure Inequigranular structure (from fine to coarse)
Texture Massive, stripped, knotty, puckered
Color Mixed picture and color with alteration of dark homogeneous areas mainly of biotite and amphibole composition and knotty-stripped areas of light-grey and white quarts and plagioclase and areas with uneven allocated garnet grains.
Ornamental index II, I class (Аd = 27-34,8 points) – ornamental, high-ornamental
Polishing index 140-170 (Оp) – I class
Technological index Not spesified

Types of Face finishing

garnet amphibolite “Ice Tundra”

Location on the map

Got questions about our stone?
Call us: 8-800-707-18-13


STONE INDUSTRY international exhibition

Dear partners and colleagues we would like to invite you to visit our stand on the 19th International Exhibition STONE INDUSTRY

STONE INDUSTRY international exhibition

Dear partners and colleagues we would like to invite you to visit our stand on the 18th International Exhibition STONE INDUSTRY


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