Opta Waive
Opta Minerals Blast Cleaning Abrasives

Powerblast GS – Indian Garnet

Powerblast GS is a selected, fine Garnet. The excellent blasting characteristics of Garnet are still present in the finer Garnet sizes. This product is ideal for the removal of mill scale, body shop restoration and all other general, delicate blasting application with low to average surface profile requirements.

Powerblast LS staurolite


  • High productivity (cleaning speed)
  • Superior white metal finish
  • Low dusting
  • Non-hygroscopic
  • Crystalline silica levels are less than 0.5%
  • Low in chloride, radiation and conductivity

Available Sizes and Profiles:

Size Profile
GS 70-140 Mesh 1.0 - 2.0 Mil

Technical Specifications

Symbol Name Percentage
Al2O3 (Aluminum Oxide) ~21%
Fe2O3 (Iron Oxide) ~31%
SiO2 (Silicon Dioxide) ~35%
TiO2 (Titanium Dioxide) ~1%
MgO (Magnesium Oxide) ~8%
CaO (Calcium Oxide) ~1.5%
Silica (Silica, crystalline quartz)   <0.5%


Colour: Pink
Bulk Density: 130 lbs/ft3
Specific Gravity: 4.1
Grain Shape: Sub-angular
Solubility: Insoluble
Hardness: 7 Mohs (see our hardness index)

Typical Gradation:

US Sieve % retained
50 0.6
70 13.8
100 45.8
140 36.8
200 3


  • 50-lb. bags, 60 bags/pallet
  • 3000-lb. Super Sacs
  • In bulk; in blower truck or Rail Hopper Cars


Indian Garnet

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