Navajo Brand Pumice

Navajo Brand® Milled Pumice

Navajo Brand® pumice products are available in particle size distributions ranging from 6-mesh to 5 microns. Their high brightness, purity, and low specific gravity offer formulators unique opportunities for superior performance.

CR Minerals offers two standard grades of Navajo Brand® milled pumice which can be used for a wide variety of applications including paints and coatings, abrasives, polishing, cleaners, rubber, and plastics compounds:

• Grade NB012:  Particle Size - 12 Micron Median Particle Size
• Grade NB005:  Particle Size - 5 Micron Median Particle Size

Navajo Brand® Granular Grades

CR Minerals offers a number of standard grades of Navajo Brand® granular pumice. Granular grades come in many size fractions, including several coarse, medium, and fine sizes.  Navajo Brand® grades F, FF, FFF, and FFFF are used primarily for polishing and fine abrasives applications.  CR Minerals pumice is known for its consistent color, chemistry, and sizing, and CR Minerals Navajo Brand® pumice is considered to be among the highest porosity, lowest density, dried and screened pumice available in the world.

Available grades include:

• Grade 8:  Particle Size - 2.0 to 3.4 MM (6 to 10 Mesh)
• Grade 6:  Particle Size - 1.4 to 2.2 MM (9 to 14 Mesh)
• Grade 4:  Particle Size - 0.4 to 1.4 MM (14 to 40 Mesh)
• Grade 3:  Particle Size - 0.2 to 0.6 MM (30 to 80 Mesh)
• Grade 1 - ½:  Particle Size - 0.15 to 0.4 MM (40 to 100 Mesh)
• Grade ½:  Particle Size - 0.1 to 0.3 MM (50 to 120 Mesh)
• Grade 0 - ¾:  Particle Size - 0.075 to 0.2 MM (80 to 200 Mesh)
• Grade 0 - ½:  Particle Size - 0.04 to 0.2 MM (80 to 200 Mesh)
• Grade 1/0:  Particle Size - 20% Finer Than 44 Microns (325 Mesh)
• Grade 2/0:  Particle Size - 30% Finer Than 44 Microns (325 Mesh)
• Grade 3/0:  Particle Size - 35% Finer Than 44 Microns (325 Mesh)
• Grade 4/0:  Particle Size - 45% Finer Than 44 Microns (325 Mesh)
• Grade 0:  Particle Size - 50% Finer Than 44 Microns (325 Mesh)
• Grade F:  Particle Size - 70% Finer Than 44 Microns (325 Mesh)
• Grade FF:  Particle Size - 75% Finer Than 44 Microns (325 Mesh)
• Grade FFF:  Particle Size - 80% Finer Than 44 Microns (325 Mesh)
• Grade FFFF:  Particle Size - 85% Finer Than 44 Microns (325 Mesh)