Sopka Buntina Deposit (Green Ray)

“Sopka Buntina” deposit is located on the Arctic Circle in a half of kilometer from “Nigrozero” deposit. The deposit is situated on a hill slope. The total square of the deposit is 4,10 hectares. The explored reserves of stones are 1 010,0 thous. m3.

The extraction is being carried out with diamond wire-sawing technology. The similar quarrying conditions and close location to “Nigrozero” deposit give an opportunity to remove stuff and machines from quarry to quarry.

The extraction is seasonal from April for November.

“Sopka Buntina” Green piroxenite

“Sopka Buntina” green pyroxenite (“Green Ray”) is a highly-ornamental hard rock which is not fully appraised by the customers. At the same time its popularity is increasing rapidly. The color of the stone is even green with false iridescence of different intensity. The oblong shaped crystals are of big and medium dimensions and differently oriented. In combination with various directions of sawing and different face finishing all these give an opportunity to get numerous variations of color intensity and intensity of face shape.Due to these features “Green Ray” is an advantaged material for facade coating, interiors, ornamental wall panels and architectural details, funerary.

  • Type of natural stone: piroxenite
  • Commercial name: “Green Ray”
  • Geological age: Ar1 2 500 - 2 800 Ma
  • Annual extraction of blocks: up to 3 000m3 (extraction is seasonal)
  • Deposit: “Sopka Buntina”
  • 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).
Index description Unit of measuring Value
Density kg/m3 3039
Water absorption % 0,11
Compressive strength in dry condition MPa 97,3
Compressive strength in wet condition MPa 74,3
Freeze resistance F F 100
Acid resistance % no loss of mass
Wear resistance g/cm2 0,36
Stroke resistance cm 42
Index description Unit of measuring Value
Pyroxen % 45
Serpentine % 38
Amphibol (actinolite) % 30
Clinkstone % 28
Carbonate % 13
Peridot % 1
Ore inclusions % 2
Index description Unit of measuring Range of indexes Average indexes
Specific effective activity in ERN Bk/kg   28
Application according to radiation factor Building raw material of I class NBR-99
Structure Medium-coarse-grained, giant-grained
Texture Massive, slightly-shaly
Color Dark-green, green
Ornamental index II, I class (Аd = 24,3-33,3 points) – ornamental, high-ornamental
Polishing index 60-100 (Оp) I class
Technological index I class

Types of Face finishing

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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