Sample 299

NavDat sample number 88043 · RHYODACITE

Sample

Sample ID	299
Rock name	RHYODACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Collected by	Hildreth and others
Comment	Lava remnant that intrudes and overlies basement argillite

Age (Ma)	Error	Min	Max	Geologic age	Dated by
1.015		0.997	1.033

Item	Value	Unit	Method
SIO2	70.2	WT%	XRF
TIO2	0.49	WT%	XRF
AL2O3	15.59	WT%	XRF
FEOT	2.56	WT%	XRF
MNO	0.04	WT%	XRF
MGO	0.65	WT%	XRF
CAO	2.04	WT%	XRF
NA2O	4.89	WT%	XRF
K2O	2.96	WT%	XRF
P2O5	0.16	WT%	XRF
LOI	1.59	WT%	XRF
TOTAL	97.73	WT%	XRF
RB	56	PPM	XRF
SR	263	PPM	XRF
Y	21	PPM	XRF
ZR	244	PPM	XRF
BA	1150	PPM	XRF
CE	54	PPM	XRF
V	35	PPM	XRF
ZN	59	PPM	XRF