Sample 32

NavDat sample number 11324 · DACITE

Sample

Sample ID	32
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	64.79	WT%	XRF
AL2O3	16.92	WT%	XRF
FE2O3	3.44	WT%	XRF
FEO	0.84	WT%	TIT
CAO	3.78	WT%	XRF
MGO	0.99	WT%	XRF
NA2O	5.12	WT%	XRF
K2O	2.93	WT%	XRF
TIO2	0.42	WT%	XRF
MNO	0.09	WT%	XRF
P2O5	0.2	WT%	XRF
H2O	0.29	WT%	PENFIELD
TOTAL	99.81	WT%	XRF
RB	75	PPM	XRF
SR	1409	PPM	XRF
Y	28	PPM	XRF
ZR	318	PPM	XRF
LA	43	PPM	XRF
CU	10	PPM	AAS
CR	17	PPM	AAS
NI	47	PPM	AAS
ZN	69	PPM	AAS