THE NEWLANDS MINE
theless distinctive in character from river diamonds and much inferior in quality.
The diamonds from the Leicester Mine are of a distinctive character ; they are very much grooved, extremely bad shapes for cutting, and many of the stones are crossgrained.
The Newlands Mine, West Griqualand, about 40 miles north-west of Kimberley, is interesting on account of the occurrence of diamond in what the Reverend Professor Bonney considers to be its true matrix. The workmen occasionally come across wellrounded, boulder-like masses of eclogite, a rather coarsely crystalline rock, sometimes more than a foot in diameter. Some of these boulders have diamonds imbedded in them. One piece examined by Professor Bonney measured approximately 4 inches by 3 inches by 2 inches, and appeared to have been broken off a larger eclogite boulder. In it were seen ten diamonds, mostly well-crystallised octahedra, perfectly 67
