Sample 136

NavDat sample number 11396 · PHONOLITE

Sample

Sample ID	136
Rock name	PHONOLITE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	coarsely porphyritic with hiatal texture between cm and mm scale sanidine phenocrysts; trachytic holocrystalline matrix of Na sanidine, aegirine, and feldspathoid; phenocrysts of feldspathoid, sanidine, clinopyroxene, and minor magnetite and occasional amphibole

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

Item	Value	Unit	Method
SIO2	54.84	WT%	XRF
AL2O3	19.23	WT%	XRF
FE2O3	2.44	WT%	XRF
FEO	1.14	WT%	TIT
CAO	2.08	WT%	XRF
MGO	0.35	WT%	XRF
NA2O	9.06	WT%	XRF
K2O	6.05	WT%	XRF
TIO2	0.44	WT%	XRF
MNO	0.13	WT%	XRF
P2O5	0.04	WT%	XRF
H2O	2.7	WT%	PENFIELD
TOTAL	98.5	WT%	XRF
RB	124	PPM	XRF
SR	2208	PPM	XRF
Y	28	PPM	XRF
ZR	561	PPM	XRF
LA	61	PPM	XRF
CE	109	PPM	NAA
ND	43	PPM	NAA
SM	7.4	PPM	NAA
EU	2.4	PPM	NAA
TB	1	PPM	NAA
DY	5	PPM	NAA
YB	2	PPM	NAA
LU	0.3	PPM	NAA
LA	58	PPM	NAA
U	6.9	PPM	NAA
TH	26	PPM	NAA
CU	39	PPM	AAS
CR	50	PPM	AAS
NI	61	PPM	AAS
ZN	110	PPM	AAS