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Aerinite, 15
Africa (South), first diamond found
in 1870, 1 Age of diamond-bearing ' pipes,' 7 Agglomeratic matrix, 53 Analyses, diamond-bearing rock, 5,
47 Analysis, bronzite, 20
— Kimberlite, 61
— Mica, 28
— Peridotite, 64
— Serpentine, 61
— Smaragdite, 19
— Vaalite, 28 Anatase, 62 Apatite, 37
* Augengneiss,' 53
Ball, J., 60
Bastite, 19
Baumhauer, E. H. von, 32
Beck, L., 58
Becke, F., 24
' Blue ground,' 3
— the diamond matrix, 44 Bonney, T. G., 55, 68
— on Kimberlite, 58 Boficky, E., 34 Bourgeois, 35 Breithaupt, A., 36 Brewster, D., 44
' Brockengesteine,' 54 Brogger, W. C, 53 Bronzite, 4, 19
— analysis, 20 Bulfontein Mines, 1 Butler, P. J., 44
Calotte, 38 ' Calc-tuff,' 38 Cataclastic structure, 53
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Chalcedony, 39
Chaper, M,, 55
Cbassignite, 56
Chondrites, 56
Chrome-diopside, 21
Chromite, 36
Cohen, E., 3, 7, 38, 52
Colesberg Kopje, shale in volcanic
pipes,
4 Colonial Exhibition, 3, 8 Connecticut, smoky quartz, 43 Cooper, G. C,
44 ' Country rock,' 3, 8, 68 Crandall, A. K., 35, 61 Crookes, W., 69
Cross, C. W., 26 Cyanite, 39
Dana, J. D., 58 Bathe, E., 26 Davies, T., 4 De Beers Mines, 1, 8, 68
— 1885, section, 8, 69 ' Demantoid,' 28 Descloiseaux, A., 32, 44 Diallage, 4 Diamond, 40
— history of, 1 Diamond-bearing peridotite, 1 --------' pipes,' age of, 7
— matrix, 44
Diamonds, liquid carbonic acid in, 43
— minute, 41
— Russian, 29 Diller, J. S„ 35, 61 Doelter, C, 22, 48 Doll, E., 44
' Dry diggings,' 2
Du Toils Pan Mines. 1. 20
— 1885. section. 3 Dumas, J. B., U
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