Blog

Granite is coarse with holocrystalline structure and massive texture. Colouring is red and brown.
Texture pattern is defined by evenly spaced and oriented in the same direction large, bulky grains of predominantly red potassium feldspar of 0.5-9 cm (content up to 30 — 80%) and white plagioclase 0.5-3 cm (up to 15-20%) and evenly distributed isomorphic grains of translucent quartz of 0.3-0.8 cm (up to 35%) and a dark red garnet of 0.3-1.5 cm (up to 10%).
There is also a small amount (2-6%) of mafic minerals particularly biotite. Mixture of grains of plagioclase, garnet mafic minerals is observed in potassium feldspar.

Mineral Composition of Granite:
— Plagioclase 12-38%
— K-feldspar 18-83%
— Quartz 12-38%
— Biotite 0-6%
— Garnet 0-8%

Physical and Mechanical Properties of Granite:
— Porosity 1.2%
— Water absorption 0.23%
— Compressive strength (dry) 1710 kgf / cm2
— Reduction factor of strength when saturated with water 0.86
— Abrasiveness 0.70 g / cm2
— After 50 cycles of freezing 1401 kgf / cm3
— Bulk density 2,700 kg / m3

Constant porphyritic granite meets the requirements of DSTU EN 1467: 2007 “Natural Stone Blocks for Facing Products” and “Plates, and Natural Stone Products”
State Standard EN 1341: 2007,
EN 1342: 2007,
EN 1343: 2007,
EN 1468: 2007,
EN 12057: 2007,
EN 1469: 2007