ULEXITE

Spec Sheet

CHEMICAL ANALYSIS:

Component                              Maximum                    Minimum                     Typical 

B2O3                                          37.89                          35.89                           36.89  

Na2O                                           6.67                             4.67                            5.67

CaO                                           17.82                           15.82                           16.82        
            Fe2O3                                                             .10                                                                                     .024

SiO2                                                                                         5.35                                                                                              4.27

Al2O3                                                                                      .50                                                                                         .07

SrO                                              1.00                                                                  .58

MgO                                             2.60                                                               1.99

SO3                                                                                             .50                                                                                       .10

LOI - 1600° F for 30 min.                       35.00                                                                       33.49

H2O - 110° C for 4 Hrs.                          1.00                                                                        0.53

PHYSICAL ANALYSIS

                                                                 Cumulative Weight

                                                                  Percent Retained

                   U.S. Screen                                   Maximum

                     Size Mesh                                           (Not to Exceed)                           Typical

  +4                                                             .0                                             .0

                          +6                                                           5.0                                           2.5

                        +12                                                           50.0                                         32.5

                        -100                                                           30.0                                         18.0                                          

            Other Physical Data

            Specific Gravity...............................................2.0                              

Hardness (Mohs Scale)...................................Ulexite 2.5      (Calcite  3.0)                                      

            Angle of Repose-settled..................................30 Degrees                    

            Bulk Density (pounds/cubic feet)                                           

                Tap............................................................85

                 Pour..........................................................75