Sample 87-16

NavDat sample number 21568 · ANDESITE

Sample

Sample ID	87-16
Rock name	ANDESITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	plagioclase-pyroxene andesite melt pods in tuff

Age (Ma)	Error	Min	Max	Geologic age	Dated by
45		40	51

Item	Value	Unit	Method
SIO2	57.52	WT%	XRF
TIO2	0.7	WT%	XRF
AL2O3	13.78	WT%	XRF
FE2O3T	6.9	WT%	XRF
MNO	0.1	WT%	XRF
MGO	5.41	WT%	XRF
CAO	7.16	WT%	XRF
NA2O	2.78	WT%	XRF
K2O	3.49	WT%	XRF
P2O5	0.32	WT%	XRF
LOI	2.28	WT%	XRF
TOTAL	100.44	WT%	XRF
RB	114	PPM	XRF
SR	658	PPM	XRF
BA	1483	PPM	XRF
Y	14	PPM	XRF
ZR	186	PPM	XRF
V	128	PPM	XRF
NI	97	PPM	XRF
CR	296	PPM	XRF
LA	45.7	PPM	MS
CE	83.6	PPM	MS
PR	8.65	PPM	MS
ND	32.9	PPM	MS
SM	5.93	PPM	MS
EU	1.41	PPM	MS
GD	4.57	PPM	MS
HO	0.66	PPM	MS
ER	1.73	PPM	MS
YB	1.52	PPM	MS
U	3.87	PPM	MS
TH	14.7	PPM	MS
PB	16.2	PPM	MS
NB	15.4	PPM	MS
HF	4.8	PPM	MS
CS	3.1	PPM	MS
W	2	PPM	MS
MO	2.1	PPM	MS
PB206_PB204	18.337		TIMS
PB207_PB204	15.591		TIMS
PB208_PB204	38.911		TIMS