404 



A TREATISE ON METAMORPHLSM. 



Table D. — Classification of alterations, with volume changes — Continued. 

 HYDRATION AND DESILICATION. 



Albite 



Do 



Albite, anorthite, orthoclase 



Alinandite, pyrope 



Anorthite 



Do 



Anorthite, hematite 



Anthophyllite 



Do 



Bronzite or hypersthene 



Do 



Cuminingtonite 



Do 



Enstatite 



Do 



Orthoolase (see Albite). 



Prehnite 



Pyrope 



Do --- 



Pyrope (see Alinandite) 

 Serpentine 



Analcite, quartz 



Natrolite, quartz 



Albite, zoisite, muscovite, quartz. 



Aphrosiderite, quartz 



Zoisite, gibbsite, quartz 



Prehnite, gibbsite, quartz 



Epidote, gibbsite, quartz 



Bastite - 



Bastite, quartz 



Bastite 



Bastite, quartz 



Bastite 



Bastite, quartz 



Serpentine 



Serpentine, quartz 



Chlorite, quartz 



do 



Serpentine, gibbsite, quartz . 



Brucite, quartz . 



+20. 82 

 +19.95 



+50. 98 



— 4.58 



+14. 85 



+ 6.57 



+12.09 



+34. 09 



« +22. 77 



» +15. 65 



« +46. 87 



+14. 20 



+36. 76 



+14. 25 



+38. 36 



+ 3.27 

 +56. 02 

 +81. 61 



+ 9.82 



HYDRATION AND OXIDATION. 



Anthophyllite 



Do 



Bronzite or hypersthene . 



Do 



Do 



Magnetite 

 Olivine . . . 



Talc, hematite . 

 Tale, limonite . 

 Talc, hematite. 

 Talc, limonite . 

 Talc, magnetite 



Limonite 



Serpentine, magnetite . 



6+14.68 



"+21.73 



H-18. 20 



+64. 63 



+29. 96 



«Sp. gr. hypersthene. 



&Sp. gr. bronzite. 



'Average sp. gr. bronzite and hypersthene. 



