LOUKONEN

BROS. STONE COMPANY

Test                       Sandstone  ASTM
 Absorption  3.0%   C97

Compressive  10,000   C170
 Strength  20,000

 Modulus of        1000-3358   C99
 Rupture

 Abrasion  8   C211
 Resistance

   Analysis of Rose Quartzitic Sandstone

 Specific Gravity   2.523
 Unit Weight    157.40
 Silica - SiO    95.54
 Aluminum Oxide - A1203  1.96
 Iron Oxide - Fe203   0.10
 Calcium Oxide   0.50
 Magnesium Oxide - MgO  0.58
 Cobalt - Co    0.08
 Lows on Ignition (incl. Moisture) 0.70

   Test                       Results  
  Specific Gravity 2.510   AASHTO T-85

Compressive  16,661   C170
 Strength  

  Freeze Thaw         1.4   AASHTO T-103  

  LA Abrasion  34   AASHTO T-96
 Resistance

   Analysis of Colorado Buff Quartzitic Sandstone

 Specific Gravity   2.510
 Unit Weight    156.40
 Silica - SiO    95.54
 Aluminum Oxide - A1203  1.96
 Calcium Oxide   0.50
 Magnesium Oxide - MgO  0.58
 Cobalt - Co    0.08
 Lows on Ignition (incl. Moisture) 0.70
 Copper - Cu    Trace  

Lyons Red Sandstone

Colorado Buff Sandstone