Bolourin Onyx Mashhad (Orange Onyx) Blocks

Bolourin Onyx Mashhad (Orange Onyx) Quarry
Khorasan province – Mashhad city – Niakan borough. This quarry is located in Niakan borough 31km off northeast Mashhad and 5km off Khajeh Hosein-Abad village.
The quarry has a proven deposit of 95000 tons and its annual production totals 6000 tons which is dispatched to domestic as well as export market.
Physical Analysis
Dry pressure resistance 1235kg/cm3
Wet pressure resistance 1170kg/cm3
Elasticity module 586kg/cm2 210-5
Hardness 3
Coefficient of contraction and expansion:
EXP.COEF = 0.021 PCT AT 200
CON.COEF = 0.009 PCT AT -40 C°
Chemical Analysis
Sio2 -- 0.63
Al2o3 -- 0.29
Fe2o3 -- 0.26
Cao -- m.d
Mgo -- 54.99
Tio2 -- 0.01
Na2o -- 0.01
K2o -- 6.03
L.O.I -- 43.75