Note 29 — Chapter XI · SOURCE OF DIAMONDIFEROUS SOIL.—EXTRACT FROM MESSRS. BAIN, URE, DANA AND OSBORNE’S GEOLOGICAL THESES.—VARIOUS THEORIES ADVANCED—NONE ENTIRELY SATISFACTORY OR CONCLUSIVE.—THE ORIGIN OF THE PRECIOUS STONE VEILED IN MYSTERY.
Reading edition
The French and Central companies of the Kimberley mine have sunk shafts comparatively recently about 620 feet deep (in 1886), and are still in this rock. It is of various textures and colors, and contains agates, jasper, calcite, iron pyrites and various other minerals.