TABLES. 369 



For the reasons given above, I conclude: It is believed that most of 

 the equations which represent the reactions in the zone of katamorphism are 

 reversible in the zone of anamorphism; and so far as there is expansion of 

 volume and liberation of heat in the upper zone, just so far is there condensation 

 of volume and absorption of heat in the lower zone. 



SECTION 5. TABLES. 



In order to present compactly the essential facts as to the alterations 

 of each mineral, a set of tables is here given. 



Table A gives the mineral sources of each of the minerals. 



Table B gives the minerals to which each mineral alters. 



Table C gives the equations representing the alterations of each of the 

 minerals into other minerals and shows the volume changes. 



Table D classifies the alterations of the minerals under processes and 

 gives their various combinations, with volume changes. 



Table A. — Sources of minerals. 



Acmite is derived from arfvedsonite. 



Aetinolite is derived from ankerite, bronzite, hypersthene, olivine, parankerite, 



sahlite. 



Albite is derived from analcite, heulandite, laumontite, plagioclases (with or- 



thoclase), sodalite, spodumene, stilbite. 



Allophane is derived from anorthoclase, microcline, orthoclase. 



Amesite is derived from pyrope. 



Analcite is derived from laumontite, leucite, nephelite, plagioclases, sodalite. 



Anhydrite is derived from gypsum. 



Anthophyllite is derived from bronzite, hypersthene, olivine. 



Aphrosiderite is derived from garnet. 



Augite is derived from hornblende. 



Bastite is derived from aetinolite, anthophyllite, bronzite, cummingtonite, 



hypersthene, sahlite. 



Berlanite is derived from chlorite. 



Beta-spodumene is derived from spodumene. 



Biotite is derived from anorthoclase, augite, hornblende, microcline, ortho- 

 clase, scapolites. 



Biotite-chlorite is derived biotite. 



Brucite is derived from chondrodite, clinohumite, humite, serpentine. 



Breunerite is derived from olivine. 



Calcite is derived from aetinolite, ankerite, anthophyllite, aragonite, augite, 



diopside, dolomite, epidote, fluorite, garnet, grossu- 

 larite, gypsum, hauynite, hornblende, noselite, paran- 

 kerite, sahlite, scapolites, tremolite, zoisite. 



Chabazite is derived from hauynite, noselite, plagioclases. 



Chalcedony is derived from <• augite, sahlite. 



Chlorite is derived from alniandire, augite, biotite, garnet, hornblende, iolite, 



phlogopite, prehnite, pyrope, staurolite, tourmaline, 

 veeuvianite. 



mox xlvii — 04 24 



