Sample 60

NavDat sample number 11342 · DACITE

Sample

Sample ID	60
Rock name	DACITE
Rock type	VOLCANIC
Composition	FELSIC
Material	IGNEOUS
Comment	seriate, porphyritic; fine grained to microcrystalline holocrystalline matrix of plagioclase, quartz, Na sanidine; vesicles common, with flow foliation; phenocrysts of plagioclase, amphibole, and minor alkali feldspar, magnetite, and biotite

Age (Ma)	Error	Min	Max	Geologic age	Dated by
43.6		41.4	46.6

Item	Value	Unit	Method
SIO2	62.32	WT%	XRF
AL2O3	17.56	WT%	XRF
FE2O3	3.76	WT%	XRF
FEO	0.84	WT%	TIT
CAO	4.04	WT%	XRF
MGO	1.03	WT%	XRF
NA2O	5.57	WT%	XRF
K2O	3.71	WT%	XRF
TIO2	0.58	WT%	XRF
MNO	0.17	WT%	XRF
P2O5	0.25	WT%	XRF
H2O	0.36	WT%	PENFIELD
TOTAL	100.19	WT%	XRF
RB	89	PPM	XRF
SR	1385	PPM	XRF
Y	29	PPM	XRF
ZR	346	PPM	XRF
LA	53	PPM	XRF
CE	107	PPM	NAA
ND	59	PPM	NAA
SM	9.8	PPM	NAA
EU	2.8	PPM	NAA
TB	1	PPM	NAA
DY	4	PPM	NAA
YB	2	PPM	NAA
LU	0.4	PPM	NAA
LA	48	PPM	NAA
CU	8	PPM	AAS
CR	25	PPM	AAS
NI	49	PPM	AAS
ZN	94	PPM	AAS