Sample 64

NavDat sample number 11350 · TRACHYTE

Sample

Sample ID	64
Rock name	TRACHYTE
Rock type	VOLCANIC
Composition	INTERMEDIATE
Material	IGNEOUS
Comment	porphyritic; phenocrysts form flow foliation; holocrystalline matrix of anorthoclase-Na sanidine, clinopyroxene, and magnetite; phenocrysts are feldspar, amphibole, pyroxene, magnetite-ulvospinel, and minor biotite

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

Item	Value	Unit	Method
SIO2	58.61	WT%	XRF
AL2O3	17.84	WT%	XRF
FE2O3	2.79	WT%	XRF
FEO	1.46	WT%	TIT
CAO	4.65	WT%	XRF
MGO	1.2	WT%	XRF
NA2O	5.56	WT%	XRF
K2O	4.47	WT%	XRF
TIO2	0.57	WT%	XRF
MNO	0.16	WT%	XRF
P2O5	0.2	WT%	XRF
H2O	1.48	WT%	PENFIELD
CO2	1.14	WT%	GRAV
TOTAL	100.13	WT%	XRF
RB	93	PPM	XRF
SR	1900	PPM	XRF
Y	30	PPM	XRF
ZR	453	PPM	XRF
LA	59	PPM	XRF
CU	25	PPM	AAS
CR	29	PPM	AAS
NI	51	PPM	AAS
ZN	103	PPM	AAS