Hard Basalt · Quarry Grade
Black Stone
Dense black basalt aggregate for concrete, roads and railways.
Supply capacity
2.4 Million MT / year
Source Rock
Hard black basalt
Sizes
6 mm · 10 mm · 20 mm · 40 mm
Compressive Strength
140 – 180 MPa
Impact Value
< 16%
01 · Overview
Material that performs in your production line.
High-density black basalt sourced from captive quarries — graded, washed and quality-controlled for RMC plants, highway projects and infrastructure programmes.
Ready-mix concrete & precast
Asphalt & wet-mix macadam
Highway sub-base & bedding
Railway ballast
Industrial flooring
Bulk export consignments
02 · Specifications
Engineered to repeatable chemistry.
Source Rock
Hard black basalt
Sizes
6 mm · 10 mm · 20 mm · 40 mm
Compressive Strength
140 – 180 MPa
Impact Value
< 16%
Water Absorption
< 1.0%
Grading
IS 383 compliant
03 · Available grades
Choose the grade that fits your process.
Every grade is produced under a consistent QA protocol with lot-level reports issued at despatch.
QA per lot
ISO 9001
Custom gradation
Direct despatch
- 01BS-1010 mm clean crushed · concrete grade
- 02BS-2020 mm graded · highway base course
- 03BS-4040 mm rail ballast & rip-rap
- 04BS-CRFCrusher run fines · sub-base
04 · Visual gallery
From the field & floor.
05 · Related resources
More from the mineral catalogue.
Ready to source black stone?