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Ch. 16: Formation of the Diamond

Ch. 16: Formation of the Diamond Page of 396 Ch. 16: Formation of the Diamond Text size:minus plus Restore normal size   Mail page  Print this page
FORMATION OF THE DIAMOND                147
the fragments of the broken diamond. A few grains of these were collected and analyzed by Professor Lawn, of the Kim-berley School of Mines. In appearance the flakes were white, translucent, and crystalline, and about as hard as the steel blade of a knife. When heated in a closed tube, moisture was given off. The mineral was very slightly effervescent, prob­ably due to a trace of carbonate of lime. It fused readily on platinum wire to a white bead.
The mineral was determined to be apophyllite, a silicate of lime and potash with 16 per cent of water. If a mineral, which is fusible at the ordinary temperature obtained with a blowpipe, and which contains 16 per cent of water, was formed at the same time the diamond crystallized, it is certain that this did not take place under the condition mentioned above, i.e. under enormously high temperature. How, then, one may ask, did the apophyllite become a part of this stone ?
Von Tschudi describes a beautiful crystallized Brazilian dia-
Ch. 16: Formation of the Diamond Page of 396 Ch. 16: Formation of the Diamond
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