#name   Format    Methan  liq.
CH4 	1        
#
#  Elem	 rho(g/cm^3)	Gas/Solid(1/0)  refl.index  Birks cor.

2         0.424		0	         0          0 0 0
# 	Z	A  	N
	6	12.011  1
	1	1.008	4

