1907-8. ] Classification of Igneous Eocks. 157 
INDEX. 
Groups. 
Acmite trachyte, 23, 23, 29. 
Aeg. foyaite, 31. 
riebeck. granite, 17. 
trachyte, 19. 
Akerite, 28. 
Alaskite, 5. 
Alkali granite, 5. 
Amphib. andesite, 18, 21, 22, 22, 25, 33. 
gabbro, 45. 
grannlite, 21. 
Amphibolite, 33, 44, 51, 56. 
pyr. andesite, 27. 
Analcime basalt, 61. 
Analcite basalt, 53, 61. 
Anamesite, 25, 25, 33, 34, 36, 43, 43, 49. 
Andesine diabase, 39. 
Andesite, 8, 18, 21, 21, 22, 23, 23, 23, 24, 26, 
27, 27, 33, 33, 33, 36, 37, 38, 41, 41, 
42, 42, 42, 42, 48. 
dacite, 25. 
dyke, 33, 37. 
pumice, 24, 63. 
Anorth. oliv. gabbro, 57. 
Aplite, 5, 6, 7, 9. 
Apo. andesite, 35. 
Aporhyolite, 3, 3. 
Ariegite, 54, 56, 62, 62, 62, 62, 64. 
Ashes, 38. 
Augite andesite, 18, 19, 33, 33, 34, 35, 35, 37, 
43, 43, 45. 
diorite, 25, 34, 44, 55. 
hornbl. syenite, 25. 
latite, 26, 26, 38. 
norite, 49. 
porphyrite, 20, 20, 20, 20, 55. 
porphyry, 26, 29. 
soda syenite, 21. 
teschenite, 45. 
Augitite, 41, 48, 50. 
Banatite, 14. 
Banakite, 28. 
Basalt, 26, 33, 34, 39, 41, 41, 42, 43, 43, 44, 
46, 47, 48, 48, 49, 50, 50, 51, 51, 51, 
51, 52, 52, 53, 53, 54, 54, 54, 54, 55, 
55, 55, 55, 56, 62, 63, 63, 63, 64, 64, 
64, 64. 
dyke, 42. 
glass, 39. 
lava, 51. 
micaceous, 44. 
schllichtern, 51. 
slag, 36. 
stalagmite, 51. 
tuff, 49. 
Basaltic dyke, 34. 
rocks (mean of 5), 49. 
Basanitoid basalt, 63, 64. 
Groups. 
Basic diorite, 36. 
glass, 50, 54. 
pumice, 49. 
tuff, 20, 36, 50. 
Biotite andesite dacite, 21. 
aug. latite, 22. 
granite, 10, 11, 11, 11, 21, 22. 
hornbl. granite, 49. 
peridodite, 52.. 
Bostonite, 28. 
Bronzite andesite, 25. 
hornbl. peridodite, 59. 
porphyrite, 25. 
Camptonite, 50, 56. 
Charnockite, 4, 4. 
Chibinite, 32. 
Comenclite, 4. 
Cordierite andesite, 20. 
Corsite, 34. 
Covite, 47. 
Dacite, 7, 17, 18, 18, 21. 
porphyry, 13. 
Diabase, 34, 35, 35, 36, 36, 37, 40, 40, 40, 42, 
43, 44, 44, 46, 46, 49, 50, 52, 53, 53, 
53, 53. 
essexite, 47. 
fine ground, 46. 
glass, 36, 52. 
intrusive, 51. 
porphyrite, 40. 
Diallage gabbro, 45. 
Dimetian, 3, 3, 17. 
Diorite, 18, 22, 22, 33, 35, 36, 36, 37, 42, 42, 
43, 44, 56. 
gneiss, 43. 
porphyrite, 17, 22, 35, 45. 
porphyry, 22, 39. 
pseudo, 61. 
Dolerite, 34, 34, 34, 34, 35, 37, 40, 42, 43, 
43, 43, 44, 47, 49, 51, 51, 51, 62. 
schllichtern, 34, 34. 
Dunite, 58, 58, 58, 60. 
Durbachite, 44. 
Eclogite, 55, 55, 61, 63. 
light green, 52. 
Elaeolite syenite, 15, 24, 29, 30, 31, 32, 
61, 63. 
syen. porphyry (resembles), 32, 47. 
tinguite, 32. 
Enstatite diabase, 35. 
diorite, 33. 
porphyrite, 33. 
Essexite, 39, 44, 47. 
Esterellite, 22. 
Euctolite, 62. 
