Alteration Code Table 

Alteration  Codes used in the Alteration Log


Alteration minerals: abundance (columns W to AI)

1	=	< 1%
2	=	<10%
3	=	10 – 50%
4	=	50 – 90%
5	=	>90%
?	=	tentative identification
Note: See also % confidence column. A high degree of confidence normally indicates thin section observation




Alteration assemblage (column L)

1	=	serpentine
2	=	talc/tremolite/chlorite
3	=	greenshist facies mafic
4	=	amphibolite facies mafic
5	= 	rodingite
6	=	talc alteration	
7	=	low grade alteration (clays, zeolites, etc.)
9 	= 	other (described as comment)