|Mesabi Black granite|
Average Absorption (ASTM C97) 0.05%
Average Compressive Strength (ASTM C170) 17,051 Psi
Average Modulus of Rupture (ASTM C99) 1,552 Psi
This Stone of the Month is supplied by Coldspring of Cold Spring, MN. Technical details provide a frame of reference only. Because stone is a product of nature, testing to determine specific physical qualities should be repeated for each project. To submit your own Stone of the Month, send a high-resolution digital image, along with the relevant technical data, to firstname.lastname@example.org.